Todurge Rock Caves & Lake Todurge village is located in the Zara district of Sivas province. It's name currently is Demiryurt, a lake that was named after it and is one of the main tourist sights of Sivas. Rock shelters in Todurge are carved into the rocks in a steep northern region of the village. Famed for their beauty, these caves were created by digging side-by-side and under one another. Located at various small spaces, over 100 of these rock caves amaze visitors with their workmanship. In some parts of the caves, stones and khorasan cement are used for walls with observation holes. The history of the Tödürge village caves dates back to Iron Age (1200-750 BC). There is also a room with a cross sign telling us that the caves were used in the hiding period of Christianity which is 2-3rd centuries. Tödürge Lake was created as a result of volcanic activity and is home to many birds that come to hunt fish. It has an area of 5sq km which is 1295m above sea level and the deepest point on the lake measures 44.5 meters. The average water depth is 2-3 meters. The water of Tödürge lake, fed both from the springs at its bottom and fresh water sources in the region, is mineral-rich. It is rare among lakes for 17 fish species to be produced within it. Inhabitants of Zara district cool themselves off by entering the lake during summer months. Some of the birds that can be watched around Tödürge Lake are as follows; Crested Grebe, Crimson-Necked Grebe, Stork, Angut, Blackbird, Blackbird, Sea Eagle, Sedge Borer, Crane, Stilt, Red-legged, Tern, Hungarian Duck, Yellow-Headed Wagtail.