Castra Celemantia: A Roman Frontier Fort in Slovakia
Site at a Glance
- Rating
- 4.3
- Popularity
- Low
- Country
- Slovakia
- Primary era
- Classical
- External website
- Open
- Eras represented
- Classical
- Civilizations
- Roman
- Site type
- Military
- Remains
- Fort
On this page20 sections
History
Castra Celemantia is a Roman military fort in Slovakia, at Iža on the northern bank of the Danube. Built during the Roman imperial period, it guarded a river crossing opposite the legionary fortress of Brigetio and formed part of the Pannonian Limes, the Roman frontier system along the Danube. The fort stood beyond the imperial border in the territory Romans called the Barbaricum, meaning lands outside Roman control, and helped secure a bridgehead while monitoring movement along the frontier.
Name and Earlier Evidence
The names Celamantia and Kelamantia appear in the second century in the geographical work of Claudius Ptolemy, a Greek geographer and astronomer who preserved information about places known to the Roman world. The identification of those names with the fort opposite Brigetio was made through later reassessment of the ancient evidence. The Hungarian name Leányvár, meaning “Girls’ Castle,” is linked to a legend about a Roman soldier named Valentinus.
Finds from the surrounding area include South Gaulish fine tableware and bronze fittings from horse equipment dating to the reign of Domitian, from AD 81 to 96. These objects may indicate a short Roman military presence before the fort’s securely established phases, although the evidence is limited. Castra Celemantia then developed in close connection with Brigetio, the principal Roman military base on the opposite bank.
The Timber Fort and the Marcomannic Wars
The first permanent fort was a timber-and-earth installation built around AD 171–175, probably under Emperor Marcus Aurelius, during the Marcomannic Wars. These were major conflicts between Rome and groups including the Marcomanni and Quadi along the Danubian frontier. Castra Celemantia was established as a frontier post rather than simply as a temporary expeditionary camp in Quadi territory.
An ancient bridge probably linked the fort with Brigetio. It carried military and commercial traffic and enabled troops to move between the two positions. Defensive walls leading toward the Danube from both sites may have helped protect the crossing. The timber fort was destroyed by enemy action before the end of the war, probably shortly before AD 180. A thick burnt layer, military equipment, and complete pottery vessels found on contemporary street surfaces preserve evidence of the destruction. Most coins recovered before 1990 belonged to the reign of Marcus Aurelius, including an as struck between December AD 178 and spring AD 179.
The Stone Fort and Late Antiquity
After the Marcomannic Wars, the timber installation was levelled and replaced on the same site by a stone fort during the reconstruction programme of Emperor Commodus. Bricks bearing the stamps of building detachments from Legio I Adiutrix, stationed at Brigetio, show that soldiers from the legion took part in the rebuilding. The stone fort remained in use from the Commodan period into the late fourth century, passing through four recognized construction phases.
Important late-antique alterations were made during the fourth century. Brick stamps associate some of this work with the military tribunes Lupicinus and Terentianus during the period of Emperor Valentinian I. The fort was probably destroyed violently no later than the aftermath of the Roman defeat at Adrianople in AD 378. That battle severely weakened imperial control in the Balkans and Danubian regions. After Rome withdrew, Quadi settlers occupied the site briefly, joined by immigrants who may have included Goths or Alans. The settlement was abandoned by the first half of the fifth century.
Garrison and Religious Evidence
The fort’s garrison has not been established with certainty. Weapons and equipment show that cavalry and archers formed a substantial part of the military presence. The ala I Hispanorum Aravacorum, a Roman auxiliary cavalry regiment, has been proposed as one possible garrison, while a detachment from Legio I Adiutrix is another possibility. The cavalry regiment may have served in Trajan’s Dacian Wars and fought during the Marcomannic Wars. Its commander, M. Valerius Maximianus, reportedly killed the Naristian king Valao in single combat, but the evidence does not establish whether this regiment formed the first garrison at Castra Celemantia.
Several inscriptions found at the fort had been brought from Brigetio and reused as building material. They include a third-century funerary inscription for Qu(i)etus Petrus, an administrator associated with the primus pilus Antonius Agrippinus, who died aged 22. Another inscription records a dedication by Primitius of Legio I Adiutrix to Silvanus Domesticus, a Roman woodland deity associated with protecting local places and domestic surroundings. A further funerary inscription names the legionary military tribune Caecilius Rufus and Ovidia Tertulla.
Rediscovery and Preservation
The ruins first appeared in a seventeenth-century plan prepared after the Battle of Komárno in 1661. In the eighteenth century, Matthias Bel described the remains and their well-preserved ramparts. Richard Pococke and Jeremiah Milles identified the fort opposite Brigetio and surveyed the two military sites and the nearby amphitheatre.
János Tóth-Kurucz investigated large areas of the fort between 1906 and 1909 and again in 1912–1913. Further work followed under Jaroslav Böhm in 1932, Bedřich Svoboda in 1955–1956, Mária Lamiová-Schmiedlová in 1957, and at the south gate in 1959. Since 1978, the Archaeological Institute of the Slovak Academy of Sciences has directed research, preservation, and presentation. Investigations by Ján Rajtár and Klára Kuzmová, including aerial and field research in 1990–1993, clarified the structure of the timber fort and the military camps nearby.
The site received monument protection in 1957 and became a national cultural monument in 1991. It is also protected under the Slovak monument-protection law adopted in 2001. In 2021, the fort and its marching camps joined the UNESCO World Heritage property “Frontiers of the Roman Empire: The Danube Limes.” During the 1990s, the archaeological area was converted into an open-air museum.
Remains
Castra Celemantia occupies a small, almost square rise near the Danube. The stone fort covered approximately 175 by 176 metres, or about three hectares, and was aligned closely with the cardinal directions. Its rounded-corner plan replaced the earlier timber fort on the same general site. The timber installation probably covered at least three hectares and may have had a trapezoidal or diamond-shaped outline with rounded corners. Its long axis ran almost exactly north to south, while the later stone fort was slightly differently aligned.
The Timber Fort
Defences and Gates
The timber fort was protected by two V-shaped ditches, an earth rampart made from their spoil, and an outer wooden palisade. The principal northern gate, the porta praetoria, was approached by a wooden bridge because the ditches continued across the entrance. The positions of the eastern and western gates remain uncertain, while the southern gate was close to the Danube.
Barracks and Streets
The early barracks were elongated, diamond-shaped buildings about 44 metres long and 11.5 metres wide. Built directly on the ground from unfired mud bricks, they had no foundations. Each building was divided into two sections about four metres wide, with each section containing three rooms measuring roughly 12.5 to 13 metres in length. Wattle-and-daub partitions separated the rooms. Streets between the barracks were approximately 4 to 4.5 metres wide.
Most floors were made from rammed earth, with limited paving of unfired mud bricks. Postholes, ovens, and fireplaces indicate activity within the buildings. Drainage channels around the barracks carried rainwater into larger collection drains. Pottery vessels, weapon fragments, and military equipment were recovered from the barracks, streets, and drains.
Military Equipment and Personal Objects
Three-bladed arrowheads, parts of composite bows, spearheads, and a spatha, a long Roman sword, point to the presence of archers and cavalry. Armour fragments include lorica segmentata, made from articulated metal strips, lorica squamata, made from overlapping scales, and lorica hamata, made from linked metal rings. Large quantities of nails from hobnailed military sandals were also found.
Fibulae from the timber fort date mainly to the second half of the second century. One elaborate gilded disc fibula shows Serapis, an Egyptian-Hellenistic deity widely worshipped in the Roman Empire. Its design probably imitated models from Dura-Europos, Batumi, and Rome. A glass fragment bears the mark of C. Gratius Salvus, a northern Italian producer active in the second half of the second century.
The Stone Fort
Walls, Ditches, and Towers
The stone fort had four gates, each flanked by two rectangular towers. The towers projected about 0.85 metres beyond the curtain wall at the south gate and at two other gates. The northern gate was single-width. The other gates had a central dividing wall, or spina, separating entry and exit lanes, and their passages were surfaced with small pieces of broken stone.
Two V-shaped ditches defended the western, northern, and eastern sides. Along the southern side, the Danube formed the principal defensive obstacle. Rectangular intermediate towers stood between the corner towers and the gates, giving the fort eight intermediate towers with access at ground level. Three corner towers were later converted into fan-shaped structures. Near the southeastern corner tower, ten cylindrical or slightly funnel-shaped pits, between 0.90 and 1.50 metres in diameter, were arranged beside the innermost ditch.
The Altered North Gate
The north gate underwent extensive late-antique rebuilding. The inner ditch was filled and levelled, and the gate towers were extended northward and joined in a roughly U-shaped arrangement. They projected 8.25 to 8.40 metres beyond the fort wall. A later wall connecting their curved fronts completely blocked the gateway, probably during the reforms of Valentinian I.
Internal Buildings
The internal arrangement partly followed the standard plan of a middle-imperial Roman fort. Barracks lined the via praetoria and via decumana, two of the principal military roads, and some included officers’ head-buildings. One excavated barrack extended for about 30 metres and had timber-framed or unfired mud-brick walls with a rammed-earth floor. Fire destroyed it around AD 250, possibly during renewed warfare on the northern Pannonian frontier, after which reusable materials were salvaged for rebuilding.
Other structures included elongated buildings with central roof-supporting posts, a probable granary near the northeastern wall, and two unusually long buildings bordering or partly covering the principal internal roads. Some of the long buildings may have served as horse stables. Their construction sequence remains difficult to establish because several were known mainly through early excavations.
Headquarters and Bath Building
The building conventionally identified as the principia, normally the central headquarters of a Roman fort, occupied an unusual position near the western gate. Its western end stood almost directly before the inner line of the west gate, covering the via principalis sinistra, while its eastern end reached the intersection of the via praetoria, via principalis dextra, and via decumana. Three evenly spaced longitudinal walls divided it into rooms of different sizes, indicating that the usual central-plan arrangement had been abandoned.
A complete rectangular bath building with a small rectangular apse stood in the southeastern corner of the fort. Its position inside the fort may have been necessary because the installation lay in the Barbaricum. Two large domed bread ovens made from air-dried bricks occupied the southwestern interior. Beside the via sagularis, the road running around the inside of the defences, a circular well stood in front of the southwestern intermediate tower. Reused softwood barrels reinforced its walls, and a circular stone setting finished its surface.
Objects and Archaeological Evidence
Pottery and Coins
Pottery from the fort includes lamps, cooking vessels, tableware, regional products from the military pottery centres at Gerhát and Kurucdomb opposite Brigetio, and imported terra sigillata, a fine red-slipped tableware, from Gaul, Germania, and Raetia. Recorded forms include Dragendorff 18/31, 33, 37, and 54. Imported pottery was especially abundant during the Severan period, from AD 193 to 235.
A bronze medallion of Faustina the Younger, found near the fort in 1922, dates to AD 169. It measures 39 millimetres across and weighs 48.70 grams. Faustina’s portrait appears on the front, while the reverse shows Venus in Faustina’s guise handing a helmet to Marcus Aurelius, represented as Mars preparing for a campaign. The medallion may have been lost or concealed during the Marcomannic Wars. It is preserved in the coin collection of the Historical Museum in Bratislava Castle.
Altars, Inscriptions, and Sculpture
A small sandstone votive altar, approximately 25 centimetres high, was dedicated to Silvanus Domesticus by Aurelia Felica. It is preserved in the Hungarian National Museum. Other finds include additional altars, funerary stelae, architectural pieces from tombs, and the limestone body of a small nude male figure wearing a cloak, probably a mythological figure, now preserved in Nitra.
Marching Camps and Later Preservation
Aerial archaeology revealed five temporary timber-and-earth marching camps west and northwest of the fort. Their areas ranged from one to 6.5 hectares, and they probably housed smaller tactical units operating during the Marcomannic Wars. A denarius struck between AD 178 and 180 was found in the ditch fill of one camp.
Much of the surviving site consists of excavated foundations. Sections of the fortifications have been conserved and, in places, slightly rebuilt, while other stonework was removed in later periods for construction elsewhere. Finds from Castra Celemantia are displayed or preserved in the Roman lapidarium of Bastion VI in Komárno, the Ponitrianske Museum in Nitra, the Hungarian National Museum in Budapest, and the collection in Bratislava Castle.
