Kalin Reservoir is a high mountain reservoir at an elevation of 2.394 m above the sea level, located in the Rila mountain range, in southwestern Bulgaria. The highest part is closed between late October to beginning of July due to snow.
The road to the top is concrete and half paved, but in very poor conditions. The road includes lots of hairpin turns and it’s not for conventional cars. It’s the highest reservoir in the Balkans.