It was declared in 1976 for the protection of a rock formation with a protected area of 3.5 ha. It present a megalithic prehistoric sanctuary located next to the springs of the Vishteritsa River in the Western Rhodopes. In this type of sanctuary, the highest point is usually a flat ground from which there is a view in all directions of the visible world. There are many cuts on the rock, where the presence of several larger resembling containers of different shapes is often observed. The most remarkable is the rock-shaped altar with fish shape neatr the river. The mythological image of the river / water as an image of the serpent / dragon - a symbol of chaos, is heavily encountered by the peoples who inhabited the eastern Mediterranean during ancient times. In Bulgarians and Serbs there is a mythological belief that carp can become a dragon if it has lived for over forty years. Similar scenes are found in the church of Boboshevo town, where under the cross instead of lamas are depicted two large scaly fish - carps and on the iconostasis of Rozhen Monastery church.