Stambolovo
Abrasive Wells (Sheytan Dere)
The abrasive wells are part of the Sheytan Dere canyon, located after the Studen Kladenets Dam.
Sheytan Dere
Sheytan Dere, also known as the Devil’s Canyon, is a canyon located along the Arda River, immediately after the Studen Kladenets Dam, near the village of Rabovo.