The Macedonian-Rhodopean Massif occupies an area of 22 672 m² from the most southern part of Bulgaria. It covers the vastest and highest mountain lands of the region. The massif consists of the Dardara massif, the Rila-Pirin group and the Rhodope Mountains.

The Dardara massif consists of the Osogovo and Belasitza Mountains. The highest peak of the region is Ruen (2 252m). The highest peak for the Rila-Pirin group is the Musala peak (2 925m) and for the Rhodopean massif is the Golyam Perelik peak (2 191m). The massif includes the most impressive gorges and ravines of Bulgaria.