Roman Spatial Conceptions
Transcript of Roman Spatial Conceptions
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
The Roman conceptualization of spaces is a complex and
interesting subject that ties together various aspects of Roman
society throughout their history. Roman spatial conceptualization
deals with a variety of subjects pertinent to Roman studies. The
most prominent focus in this regard is with cities, but also
includes such topics like the Roman frontier, religion,
architecture, and more. Although cities (particularly Rome)
garner much of the focus in scholarship, there exists a crucial
link in Roman spatial conceptualization between Roman military
camps and these cities. To illustrate this link between the two,
this paper will examine their similarities in terminology,
concepts, and other aspects that determine and define their
spaces. Additionally, the paper will explore the following
questions, which will demonstrate this conceptual link. First,
what terms do ancient authors employ to describe both the cities
and the camps, and what do these similarities imply? Second, what
religious practices and rules are congruent to both the city and
the camp in regards to their foundation and consecration?
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
Finally, do the religious and physical spatial correlations of
the city and the camp inform us of a deeper understanding of how
the Romans conceptualized all their important spaces? Overall,
the main argument this paper makes is that although camps
represent the physical city of Rome in microcosm, the Roman
religious conceptualization of the city also carries over to the
camps.
The primary historical scope of this paper is from the
founding of Rome to the Claudian extension of the pomerium in 49
CE. The reason being that during this time frame, the religious
rules and associations concerning the sacred spaces of Rome (the
pomerium) retain their importance. From Claudius' extension of
the pomerium onwards, the ‘rules’ seem to increasingly become
less important, as foreign cults and imperial preference incur on
them. The pomerium of Rome before Claudius, for instance,
excludes the Aventine and the Campus Martius, primarily because
these regions contain aspects that traditionally are always
supposed to be extra pomerium. These aspects include foreign cult
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
temples and shrines, military shrines, tombs and mausoleums, and
other ‘unclean’ places that violate the traditional rules
regulating what is permitted within the sacred boundary.1
The pomerium of Rome is the starting point for any
conversation regarding Roman sacred spatial conceptions for
cities (and by extension, the camps). Within Rome, the pomerium
defines the bounds of the consecrated city proper. Varro (Ling.
5.143) describes the ritual involved in creating the pomerium of
the city as Etruscan in origin. First, it takes place on an
auspicious day, and involves leading a bull and cow attached to a
plow around the intended site to create a furrow.2 The resulting
ditch is representative of the fossa and the upturned earthen
mound is the murus. Both the ditch and the wall together were
‘symbolic fortifications’3 that symbolize a city’s connection to
the army because of their military association. Livy (1.44.4)
1 L. Richardson, Jr., A New Topographical Dictionary of Ancient Rome (Baltimore: John Hopkins University Press, 1992), 294.
2 Tac. 12.24 also gives a brief description of this ritual before describing the bounds of the pomerium.
3 Richardson 1992, 293.3
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
describes the pomerium as “the tract on both sides of the wall,
the space which the Etruscans used formerly to consecrate with
augural ceremonies, where they proposed to erect their wall,
establishing definite limits on either side of it.”4 He continues
by saying that the rule for the pomerium was to keep it free and
clear of any buildings and human uses (i.e. habitation or
cultivation) because the gods forbid it.5 Considering this
description, it is easy to see why the Romans considered not just
the boundary zone to be sacred space, but also the walls.
Overall, the Roman concept of the pomerium is a zone that
represents the dividing line between military and civilian
space.6
4 All translations of Livy from B. O. Foster’s “Livy.” In the Loeb (Cambridge:Harvard University Press, 1988). See also Roger Antaya, “The Etymology of the Pomerium,” AJPhil. 101.2 (1980), 184-89 for a discussion regarding whether or not the pomerium was a strip of land on one side of the walls as described by Livy, or both to include the walls. Antaya argues for the latter, and this paper agrees with Livy’s assessment.
5 Livy 1.44.4-5.
6 Ruben Taylor, “Watching the Skies: Janus, Auspication, and the Shrine in theRoman Forum,” Amer. Acad. Rome 45 (2000): 24. See also OCD², 154 and Pierre Grimal, Roman Cities: Les villes romaines, ed. and trans. G. Michael Woloch (Madison: The University of Wisconsin Press, 1983), 30.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
The pomerium of Rome includes a number of various religious-
based rules regarding its use and definition. As stated above,
the pomerium is to be free of any structures, and nothing
pertaining to human use is to be within either, including burials
and plantings. Another pomerial ‘rule’ is that within these
consecrated bounds are no ‘foreign’ temples or shrines - only
temples dedicated to Roman gods. This last ‘rule,’ however, is
not as cut and dry as it may seem. For instance, the temple to
Hercules Ara Maxima is, according to Tacitus, within the
pomerium; yet from its very name, one is able to tell that it was
not ‘Roman’ in origin.7 It is also important to keep in mind,
however, that the origin of even the typical ‘Roman’ deities like
the Capitoline Triad, for instance, are not entirely ‘Roman’ in
origin. Many of these gods came from the Etruscans and the
Greeks. Even so, these deities essentially, and thoroughly,
7 Tac. Ann. 12.24. See also Eric M. Orlin, “Foreign Cults in Republican Rome: Rethinking the Pomerial Rule,” Amer. Acad. Rome 47 (2002): 5-7, where he provides a discussion on the placement of various foreign-originated Romanizeddeities within the pomerium.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
become ‘Romanized’ over time.8 A recent scholar suggests that the
rule regarding foreign cults never existed in Republican Rome,
and argues that many of these foreign cult temples and shrines
are on the Aventine because that is where the foreigners mostly
lived in Rome. Their placement on the Aventine is only reflective
of the “Roman ideology of openness and Rome’s ability to
incorporate foreigners into the res publica.”9 Even considering
this, that the majority of all foreign cult temples and shrines
are in fact extra pomerium (being primarily on the Aventine or in
the Campus Martius) is not a definitive counter to the existence
of the pomerial rules. Whether or not such a rule existed, though,
is not the focus here. The fact that most of these foreign cult
temples and shrines were typically extra pomerium is suggestive of,
if not a ‘rule,’ at least a tradition of keeping them outside the
pomerial bounds. Similarly, the same placement of foreign cult
shrines to the outside of a military camp’s perimeter in favor of8 See Grimal 1983, 15 for a statement on the Etruscan origin of the CapitolineTriad. See also Orlin 2002, 2-4 for a discussion on the Etruscan and Greek origination of many Roman deities. See also Grimal 1983, 15 for a statement onthe Etruscan origin of the Capitoline Triad.
9 Orlin 2002, 26
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
the traditional Roman deities is further supportive of the
existence of a pomerial rule, as will be shown below.
There is one rule of the pomerium that is definitely at odds
with the military connection, and deserves some discussion here.
Quite simply, no military presence is ever to be within the
bounds of the pomerium, as this is sacrilegious to the Romans.
The best illustration of this rule is with the various accounts
of returning generals to Rome. Before gaining entrance into the
city to celebrate a triumph, the general and his men had to first
assemble in the Campus Martius before crossing the pomerium
through the porta triumphalis.10 If a general even places one foot
within the pomerium before the Senate decrees that he is able, he
instantly forfeits his imperium and any chance for a triumph.11
Once the Senate grants permission for a triumph, the entire army
assembles in the Campus Martius extra pomerium to perform
sacrifices and purification rituals. Once the extra pomerium
rituals conclude, the next act of purification was to lead the 10 Grimal 1983, 80.
11 Peter J. Holliday, The Origins of Roman Historical Commemoration in the Visual Arts (Cambridge: Cambridge University Press, 2002), 23. See also Grimal 1983, 5.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
entire procession through the porta triumphalis that was only open
for such an occasion. For the final act of purification, the
general leads the procession in a counter-clockwise lustration
around the sacred boundary intra pomerium.12 Additionally, a passage
from Festus (104 L: 117 M) explains that the soldiers also must
carry laurels with them because the procession passes over the
pomerium.13 The likely reason for this is found with a passage
from Pliny (NH 15.40.138), who says that laurels are specifically
used in purification rituals. Considering all this, the entire
triumph is an elaborate ritual steeped with religious
significance. The purification rites and sacrifices to the gods
show how important the sacred space of the pomerium is to the
Romans, and the triumphal parade is representative of the sacred
ties between the army and the city.
This last rule prohibiting a military presence within the
confines of Rome’s sacred space is not contrary to the main
argument of this paper, as the triumphal association above shows.
12 Ibid., 24. See also Taylor 2000, 10.
13 Reference to Festus found in Holliday 2002, 24.8
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
The military connection to the Roman pomerium is most, however,
conspicuous in the last rule regarding the expansion of the
bounds of the pomerium. Several ancient authors speak of the rule
that a general that holds imperium who expanded the boundaries of
the empire through conquest can only expand the pomerium.14 Since
military conquest is the means by which the pomerium also is
permitted to expand, then it makes sense that this rule alone
exemplifies the strong tie between the two.
Within the city of Rome, the space confined by the bounds of
the pomerium is consecrated space that creates a templum.15 Varro
(Ling. 7.8) describes the templum as “a place set aside and
limited by certain formulaic words for the purpose of augury or
the taking of auspices.”16 In other words, the religious purpose
14 Sen. Dial. 10.13.8; Gell. NA 13.14.3; Tac. Ann. 12.23
15 See Platner-Ashby, 329.
16 All translations of Varro from Roland G. Kent’s “Varro: On the Latin Language.” In the Loeb (Cambridge: Harvard University Press, 1977). Interestingly enough, Varro also includes in this passage the formulaic verse augurs use in creating their templa. See also Joseph Rykwert, The Idea of a Town: The Anthropology of Urban Form in Rome, Italy and the Ancient World (Cambridge: The MIT Press, 1988), 45-49 for a discussion on the Roman concept of the templum and its symbolic use in the foundation of cities.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
of any templum is to establish the sanctioned space of the gods,
or to define where the gods are present. The sanctity and
consecration of such a space is important to the Romans not just
in their urban centers, but also in the camps of the military.
The establishment of any templum requires a ritual that only an
augur employs to read the auspices. They take the auspices during
the founding of any new city, and within the pomerial bounds of
the city of Rome for a variety of reasons, but most significantly
in regards to the initiation of military campaigns. Outside of
Rome, the augurs must establish their templum any time they wish
to take auspices. Within Rome, the permanent place for public
augury is the Auguraculum in the Arx on the Capitoline, which is
an open space with a small hut or tent in it.17
The Auguraculum of Rome has a direct parallel to a similar
structure within Roman military camps. Every praetorium in Roman
army camps has a small tent or enclosure (an auguratorium) where
the general or camp priests take auspices for the army, a
17 Taylor 2000, 11-12. See also Platner-Ashby, 61; Richardson 1992, 45.10
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
necessity during any military campaign.18 The entire military
camp, like a city, is also likely a consecrated space as well,
and because the definition of the templum is any enclosed sacred
space, so too can a camp be a templum.19 Both Polybius and Pseudo-
Hyginus’ descriptions of the Roman camp are quite similar to how
an augur establishes his templum. First, both the camp and the
augural templum have an enclosed space, and second both are
divided and oriented similarly.20 The essential point here is
that any place an augur (which a general often was, and if not
had one in the camp) sets up to take the auspices is a templum,
which includes military camps in addition to the sacred boundary
of cities. This correspondence of ritual space within the camps
and in the cities thus provides another crucial link between the
two in regards to Roman religious spatial conceptualization.
18 See Ps.-Hyginus De Munitionibus Castrorum, 11; Joseph. BJ 3.5.2 describes the praetorium of the Roman camps as resembling ‘small temples;’ See also Taylor 2000, 13.
19 Rykwert 1988, 46.
20 Polyb. 6.27.2, 41.3-8; Ps.-Hyginus De Munitionibus Castrorum 11; Rykwert 1988, 68.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
As indicated above, the augur’s rituals are very important
to the Romans in many respects, and it is now necessary to
examine these during the foundation of a new city. The procedure
for founding of a new city and setting up a camp provide some
interesting parallels that help illustrate the connection between
the two in regards to spatial conceptualization. The surveyors of
a new Roman town or city combined religious concepts with their
practical art, including augury. The religious aspect for them
first is in how the chosen site is oriented, where alignment to
the cardinal directions is ideal. Although this is not always
practical in every instance depending on terrain, they seem to
accommodate this orientation as closely as possible.21 The augur
or surveyor begins by standing in the center of the proposed site
and draws a diagram with his staff (a lituus), dividing it into
four parts by two intersecting lines determined from the shadows
cast by the staff.22 These two perpendicular lines are the cardo
21 Peter Woodward and Ann Woodward, “Dedicating the Town: Urban Foundation Deposits in Roman Britain,” The Object of Dedication: World Archaeology 36.1 (2004), 68-69.
22 Rykwert 1988, 45.12
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
(N-S line) and the decumanis (E-W line), and at the center point
an altar is likely placed.23 The quartered space within the
diagram is a consecrated templum, and correlates to the four
augural regions of the sky that Varro describes.24 This division
into four quarters is also apparent within the original city of
Rome and within every army camp.
The setup of any Roman camp as the sources describe is
almost quite a ritualistic affair itself. When the army arrives
to their place of encampment, surveyors draw out the camp in a
manner very similar to the foundation of a city. Military
surveyors use a similar technique as city surveyors with the use
of an instrument, called a groma, which determines the
orientation of the camp and the main axes (the cardo and
decumanus).25 Additionally, the central placement of the groma in
23 Grimal and Woloch 1983, 11. See also Woodward and Woodward 2004, 82; Rykwert 1988, 50, postulates that the lituus may have had an attachment that works like the surveyor’s groma.
24 Varro Ling. 7.6ff; Rykwert 1988, 46-48 and 48 Fig 6; Woodward and Woodward 2004, 68-69.
25 The groma is used by both urban and military surveyors; See Rykwert 1988, 50 and 51 Figs 11-12; Grimal and Woloch 1983, 11; Woodward and Woodward 2004, 83.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
the camp is also the placement of the camp altar (the ara) that
sits in front of the praetorium. Polybius says that when the army
surveyors arrive at the intended site, they mark out the center
of the camp with a white flag, which is where the praetorium and
the auguraculum.26 The only thing missing from the sources is any
augural ritual dedicating or consecrating the site of the camp.
Although this piece is missing from the puzzle, because of the
close similarity between the camp and the city as templa, it is
suggestive that such a ritual might also exist for setting up the
camps. If such a ritual exists for camps, though, it is likely
not as flamboyant as a city dedication for purposes of
practicality. Another indication of the similarity between the
city and the camp, at least physically, is the frequent reference
to military camps looking like cities.27
Once the city or the camp is completely setup, it is
necessary for the Romans to purify it. This purification ritual 26 Polyb. 6.27.2, 6.41.6-7; Cf. Ps.-Hyginus De Munitionibus Castrorum 11-12, and Veg. Mil. 3.8; See also Rykwert 1988, 48 and 68.
27 Polyb. 6.31.10 and 6.41.10-12; Joseph. BJ 3.5.2; See also Rykwert 1988, 68 where he states that the Roman military camp is “a diagrammatic evocation of the city of Rome.”
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
is one that does not occur only once, and it repeats to maintain
purification or to re-purify the site. The primary feature of any
purification ritual for the Romans is the lustration. This ritual
act of circumambulation is apparent in a number of various rites
that is in connection with not only Rome’s sacred boundary, but
also in the purification of Roman camps. The first instance of
this in the city is again with the description regarding the
triumph, where the general leads the troops around the pomerium
counter-clockwise in a lustration. The purpose of the lustration
being to purify the army from the taints of warfare, and possibly
to purify the Roman state too, as the army represents the state
in battle.28 This action is apparent in several other important
religious acts in Rome, but mostly in the Lupercalia, the
Lustrum, and the Amburbium.
The Lupercalia is an ancient festival that ritually purifies
the entire city of Rome that supposedly includes a lustration
around the old pomerial line around the Palatine. Every 15th of
28 Holliday 2002, 24; See also Larissa Bonfante Warren, “Roman Triumphs and Etruscan Kings: The Changing Face of the Triumph,” JRS 60 (1970), 53-55.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
February, the Luperci priests run around the Palatine naked and
ritually strike young women with strips of goatskin to promote
fertility.29 The important aspect of the ritual is the lustration
around the Palatine that serves to purify the people of the city.
Although it is not the only ritual in Roman religious practice
that involves lustration, it serves as a prime example of a major
purification festival that involves the pomerium.
Another purification act that involves the pomerium is the
Amburbium, which is a ritual the Romans perform typically during
a time of impending danger or bad portent. Lucan (1.592-95)
describes it best, where sacrificial victims, the pontifices, the
Vestals, and other priests lustrate around Rome in order to
purify it after a series of bad omens. The same ritual is also
referenced by Apuleius (Met. 3.2), where Lucius is “led in a
procession round every corner of the city, like one of those
victims that are paraded from place to place before being
29 Plut. Rom. 21.3-5; Plut. Quaest. Rom. 68; Varro 6.34; See also Rykwert 1988, 93-96.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
sacrificed to expiate some threatening portent.”30 Although both
these references imply a human sacrifice, it is more likely that
the ritual involves animal sacrifice, as the Amburbium is also an
annual festival held every 2 February.31
The next purification act does not involve the pomerium of
Rome, but it does involve both the people of Rome and the
military. The Lustrum is the ritual where the citizen body
assembles on the Campus Martius like an army. Priests then lead
three sacrificial animals, a sheep, a pig, and a bull (called a
suovetaurilia), in a lustration around them all in order to purify
them. Although purification is the religious aspect of this
particular ritual, it also serves a practical aspect in that it
concludes the census.32 Bothe the Amburbium and the Lustrum involve
a ritual sacrifice after the lustration. The former is around the
city, and the latter around the people of the city, and both
30 All translations of Apuleius from E. J. Kenney’s Apuleius: The Golden Ass or Metamorphoses (London: Penguin Books, 2004).
31 Rykwert 1988, 126.
32 Livy 1.44.2; Varro Rust. 2.1.10; See also Rykwert 1988, 126, who says this ritual is connected to the sacred boundary, although there is not any direct reference for this statement.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
likely include the suovetaurilia as the victims. The suovetaurilia is an
important ritual for purifying camps as well. The best evidence
for this is not textual, but monumental. Trajan’s Column depicts
the suovetaurilia and lustration around a camp to purify it after it
has been constructed in three different scenes.33 This provides
not only a crucial link between the purification of cities and
camps through lustration, but it also further supports the idea
that the camp is consecrated space (i.e. a templum).
Now it is necessary to discuss the physical similarities
between the camp and the city in order to strengthen the basis
for making comparative claims for parallel sacred space. That
cities and towns are sacred to the Romans is already established;
however, the focus here is to argue that the Roman army camps
also carry the same meanings and significance in the Roman
religious spatial conceptualization. As stated above, the camp
and the city in layout are very similar in appearance, in
addition to both containing similar structures like the
33 Rykwert 1988, 131 Fig 103; See also Yann Le Bohec, The Imperial Roman Army, trans. Raphael Bate (London: Routledge, 2001), 50, 238-39 and plate XI 14.7, 37, 77-78.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
auguraculum. Out of all the similarities, though, the most
significant and telling are the three primary structures that
define a camp’s boundaries: the intervallum, vallum, and fossa.
Before considering all these together as a unit, it is necessary
to examine the parts individually in regards to any symbolic or
religious meaning.
Walls are important to both cities and camps as physical
barriers against attack, but they also hold symbolic and
religious significance in representing the barrier between the
‘civilized’ and ‘uncivilized.’ A sense of this religious
significance for Roman city walls is evident in a number of
ancient accounts, but the most revealing of these is with the
legend of Romulus and Remus. In this story, Remus leaps over
Romulus’ new walls in apparent mockery of their size. Romulus
becomes angry with his brother and declares that anyone who jumps
over his walls will die and has Remus killed.34 Furthermore, that
the walls are within the bounds of the pomerium, further points
34 Livy 1.7.2; Plut. Rom. 10.1; Plut. Quaest. Rom. 27; See also Rykwert 1988, 28, who says that the Romulus and Remus story is likely “an allusion to a forgotten ritual.”
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
to their holiness.35 These sources account for the sanctity of
the city walls, but there is evidence for the consideration of
the inviolability of camp walls. Justinian provides the support
for the holiness of the walls of the camp, where there is a law
that sentences to death anyone who scales the vallum.36
The sanctity of city and camp walls to the Romans is only
one piece to a larger puzzle. Walls and fossae are boundaries that
surround consecrated and holy spaces, and this spatial
conceptualization is what is of importance. Justinian’s law also
provides evidence to the sanctity of the fossa of the camp. He
states that any person who jumps over the camp’s fossa is to
suffer immediate expulsion from the army.37 The sources, as shown
above, well attest to the holiness of the fossa, especially in the
descriptions of the pomerium, where the plowing of the furrow
(fossa) is the action that initially defines the boundary.38
35 Livy 1.44.4-5; Plut. Rom. 11.3
36 Justinian Dig. 49.16.3.17.
37 Ibid., 49.16.3.18.
38 Varro Ling. 5.143; Livy 1.44.4; Plut. Rom. 11.3; Plut. Quaest. Rom. 27.20
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
Justinian’s law regarding the fossa and the vallum suggests that
the camp boundaries hold the same religious significance.
As shown above, one of the pomerium ‘rules’ is to keep the
strips of land on both sides of the walls free and clear from any
structure or from human use.39 Within the camps, a similar
feature is apparent with the space known as the intervallum.
According to Polybius, the intervallum of the camp is 200 feet in
width, and is devoid of any structures. Although it is unclear
whether or not this space holds any religious significance to the
Romans, it certainly has several practical uses. First, it allows
for the easy assembly and movement of the troops within the
walls. Second, it provides a useful space for the storage of
booty and plunder. Third, and most important, is it provides some
protection from incoming missile fire.40 This practical
description of the camp intervallum might suggest one of the
original practical applications of the pomerium. It is reasonable
39 Livy 1.44.4-5.
40 Polyb. 6.31.11-14; Cf. Ps.-Hyginus De Munitionibus Castrorum 14, who says this space is 60 feet wide. Regardless of the width, though, it is always open space.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
to assume that since the Romans took much of their spatial
conceptualizations from the Etruscans (including their camp
designs) the pomerium perhaps evolved from an old intervallum of
Rome. An open space before and after a wall allows for an easier
defense of it, where buildings and other structures makes
defending the wall especially difficult. This practical
application, if true for the pomerium, did not last forever as
the physical city quickly outgrew the bounds of the sacred space.
The Roman camps, ever practical in nature, likely embody both the
religious aspects and the physical advantages of the arrangement,
long after such practicalities left the pomerium of Rome.41
The pomerium is the strip of land on either side of, and
including, the city walls. The individual parts of the boundaries
of the camps is shown above to also carry religious significance,
but so far a strip of land outside the camp’s vallum needs
evidence for its sanctity. The most important piece of evidence,
therefore, that ties all the parts together in religious
importance comes from Pseudo-Hyginus. The passage describes a
41 Antaya 1980, 189.22
Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
kind of military parallel to the city’s pomerium, which indicates
the strip of land outside the walls is likely sacred space. When
describing the construction of the camp’s vallum, he includes an
almost cryptic line: “Similiter ante portas ad titulum, ut ad
fossa, vallum; causa instructionis sanctum est cognominatum.”42
This is describing an additional rampart that essentially is a
small wall in front of the gates at the titulus. In the passage
before this, Pseudo-Hyginus describes the titulus as being a small
ditch 60 feet in front of the gates.43 This fortification feature
is evident in a variety of different camps, as it is easy to
construct and is useful for impeding attacks.44 Pseudo-Hyginus
says that its placement makes it sacred, indicating that the zone
where it stands (which also includes the fossa) is, like the
city’s pomerium, sacred space. This passage thus shows that a
strip of land outside the walls is also likely hallowed ground
42 Ps.-Hyginus De Munitionibus Castrorum 50.
43 Ibid., 49, the titulus is farther out than the main fossa.
44 A. A. R. Henderson and L. J. F. Keppie, “Titulus or Titulum?” Britannia 18 (1987), 281-84.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
and, in considering the above well, it shows that so are the
walls and the intervallum.
Roman religious spatial conceptualization proves to be a
complex web of interconnecting strands of ideas and terms that
stretch through their society. The city of Rome inherently
embodies many concepts that the Roman camps represent not only
physically, but also religiously and symbolically. This intricate
web of meaning ties into the spatial conceptualization embodied
in the city of Rome and reflected in the camps represents a
larger scheme that extends to the Roman perception of their
entire worldview. Similarly and for instance, the frontiers of
the High Empire is a complex system of interconnecting boundary
zones that divide the ‘civilized’ Roman world from the
‘barbarian’ outside world.45 This echoes in the Roman idea of the
pomerium that reflects to camp boundaries as this paper shows, in
that they spatially separate Roman civilization from the outside
‘un-civilized’ world. This connection between the borders of the
45 See Hugh Elton, Frontiers of the Roman Empire (Bloomington: Indiana University Press, 1996), for a complete discussion on this subject of the frontier.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
Empire and the concept of a sacred boundary is most evident in
the pomerium extension rule discussed above. All this ties
together the Roman spatial conceptualization both temporally and
religiously.
In regards to the camp-city connection, it is worth
mentioning again that the Roman camp essentially is a microcosm
of the city of Rome. This paper demonstrates that this is not
just a physical reflection, but a religious and symbolic one too.
Through these camps, then, other Roman concepts and ideas
proliferate wherever they are. The camps become centers of
transmission for Romanization and, in some cases, even evolve to
become the kernels to cities.46 It is no surprise, then, that
Roman spatial conceptualizations radiate out from the city of
Rome, and through the military camps, to the rest of the Empire.
Overall, the analysis above illustrates that the camps parallel
and reflect many of the religious spatial conceptualizations that
the city, particularly Rome, also embodies.
46 Thomas H. Watkins, “Roman Legionary Fortresses and the Cities of Modern Europe,” Military Affairs 47.1 (1983), 15-17; Ray Laurence, “The Image of the RomanCity,” Cambridge Archaeological Journal 10.2 (2000), 348.
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Bird, Andrew J.Imagining the Urbs and Castra: Roman Spatial Conceptualizations
Dr. Langford Independent Study – Spring 2009
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