Wikipedia
Tsepina
Tsepina was a castle and town in the western Rhodope mountains, southern Bulgaria, now in ruins. It is from the Dorkovo village in the north-eastern part of the Chepinska valley. Tsepina is above sea level.
The town was built on a steep height at above sea level. Its outer walls closed an area of 25 decares and was dominated by a citadel at the top of the cliff. The foundations of three churches have been excavated as well as four large water storage tanks up to deep.