It is surrounded by the Balkan Range (also known as the Stara Planina) to the north, Sredna Gora Mountain to the south, and Koznitsa and Galabets saddles to the east and west, respectively.
Pirdop |
According to the Treaty of Berlin of 1878 the border between the liberated Principality of Bulgaria and the autonomous Eastern Rumelia followed the summit of the Balkan mountains and went southwards between Pirdop and Dushintsi eventually following the Topolnitsa river at Petrich.