The Cave Church, also known as Cave Church of Sts. Peter and Paul, is situated near the village of Rsovci, Stara Planina, in a cave on Kalik Hill, 22 km from Pirot. Dedicated to Saint Peter and Paul the Apostle, the church was built in the 13th century. It contains a fresco, painted on the wall of the cave, depicting a bald-headed Jesus. The church has been under Serbian state protection as a national cultural heritage site since 1981.