Burnum stood above the Krka River in inland Dalmatia, where Rome needed to control movement between the Adriatic coast and the interior. A military camp developed there during the reign of Augustus and the wars that brought the region under Roman authority. Legio XX Valeria Victrix was associated with Burnum during the Great Illyrian Revolt of 6–9 CE. After that legion departed, Legio XI occupied the base, and the fortress reached a more regular monumental form under the early emperors.

The legionary headquarters, or principia, occupied the center of the camp. Its courtyard, offices, assembly hall, and shrine for military standards organized administration and ritual. Surviving arches, long known locally as the Hollow Church, belonged to this monumental core. Barracks, workshops, storehouses, roads, water systems, and defenses supported thousands of soldiers. An underground aqueduct brought water across difficult karst terrain. Burnum’s garrison supervised routes, construction, taxation, and security as Roman government expanded through the province of Dalmatia.

A military amphitheatre was cut partly into bedrock outside the fortress. Soldiers of Legio XI helped construct it, and later alterations supported civilian use. With four entrances and seating for several thousand spectators, it hosted training, ceremonies, combat, and public entertainment. Legio IV Flavia Felix briefly succeeded the Eleventh Legion around 70 CE. When permanent legionary occupation ended, the settlement did not disappear. Burnum developed municipal institutions, and former military buildings were adapted to civic, commercial, and judicial functions.

The town prospered through the imperial period, connected with nearby farms, roads, river crossings, and local communities. Christianity and late antique change reshaped the region before warfare between the eastern Roman Empire and Ostrogoths contributed to destruction in the sixth century. Stone was reused, vegetation covered structures, and memory survived in ruins and place-names. Antiquarians recorded inscriptions and arches, while Austrian, Yugoslav, and Croatian archaeologists gradually investigated the fortress, town, amphitheatre, training camp, cemeteries, and water supply.

Modern research combines excavation, aerial survey, geophysics, epigraphy, and conservation. The archaeological collection at nearby Puljane presents finds within Krka National Park, linking cultural remains with the river landscape that gave the site strategic value. Burnum is significant because it follows the complete life cycle of a Roman military installation: conquest base, permanent legionary fortress, settlement of dependents and veterans, municipal town, and abandoned ruin. Its amphitheatre and headquarters also preserve the institutional world that bound provincial armies to the empire. The camp’s scale reflects Rome’s considerable investment in frontier logistics.