The area around the Krka River includes many important archaeological sites, without which it would be impossible to know anything about the history of the area. Within the national park boundaries, there are about 20 archaeological sites from all periods
Prehistorical sites were primarily hill forts, the best known of which is the hill fort at Puljani, which Pliny himself listed among the “fortresses famed for their battles”, and cave sites such as the one at the Oziđana pećina cave, where recent archaeological research discovered traces of human settlement.
Among sites dating back to the period of the Roman Empire, the Burnum military is certainly the most significant, with its recently discovered amphitheatre, a world class find. The remnants of the Burnum military camp are situated on the right bank of the Krka River, near where the village of Ivoševci stands today. Today it is possible to see the remnants of the arches that belonged to the building of the Pretoria (camp command) and the amphitheatre, where a great deal of archaeological material has been uncovered in recent studies.