Tundja river springs from the central parts of the Stara planina mountain. It is the biggest tributary of Maritsa river, and its total water area is 7880 sq. km.
The dam’s 20 km length and many bays present a marvelous view worth seeing.
Gabrovnitsa River takes its sources from the foothills of the Triglav Massif, dividing it from the main crest, remaining to the North.
The Turkish ridge place is located between mountain peak Maragidik, Rusalska polyana meadow and the Yurushka gramada peak.