The complex of springs of the Black Timok is called Pečura. It is located in the village of Krivi Vir, near Boljevac. In Pečura there are virtually two springs which are not connected. The main spring is located at the beginning of Pečura gorge, where water flows under huge rocks and partly from the large cave. The second one, noticeably weaker, is a little lower near the remains of a watermill. Water that takes its source from a small cave is always clear and it can dry up in the late summer.