Burnum is also popularly called Hollow Church (Šuplja Crkva) and is one of many ruins in the Balkans identified in folklore as Traianus' Town (Trojanov Grad).

[2] Several Roman legions were located there in succession, and the first one was Legio XX Valeria Victrix from the beginning of the Pannonian uprising (Bellum Batonianum) in AD 6-9.

Building was initiated by the Roman governor for Dalmatia Publius Cornelius Dolabella and continued by the Emperor Claudius.

According to some sources, a rebellion of Lucius Arruntius Camillus Scribonianus against the emperor Claudius in AD 42 was started at this camp as well.

It had four entrances and used the natural terrain, being cut into the bedrock of the karst by soldiers from Legio XI, but it was later turned over to civilian use.

[7] The Plavno Polje[8] is an entirely underground aqueduct, so that water stayed cool in the summer and could not freeze in the winter.