A significant portion of the rock niches, which are found in great numbers on both slopes of the Inözü Valley, were shaped by human hands; it is believed that their initial use is associated with rock-cut tombs dating to the Roman Period. During the Early Byzantine Period, some of these rock-cut spaces were remodeled; their entrances were sealed with stone walls made of Horasan mortar, giving them new functions. Their architectural features and spatial layouts suggest that these rock chambers are similar to comparable examples in the Cappadocia region and were used as places for secret worship and gatherings during the early Christian period.