After the Roman conquest, municipia were established in this area, which was located in the Roman province of Dalmatia. The most important of them was "Salvium", which was previously an Illyrian settlement. Salvium is located 6 km away from town of Glamoč. An early Christian basilica was discovered on the territory of Salvium. It was built in the 6th century, probably on the remains of a Roman temple. North of Glamoč, a second basilica was built, probably at the same time as the aforementioned basilica in Salvium was built. These basilicas belonged to the diocese of Salona. In 533, they became part of the newly established diocese in Ludrum (Knin, Croatia). The basilicas were probably destroyed during the invasion of the Avars in 597.