The Gramos is situated on the borders of the Kolonjë district of Albania and the Ioannina and Kastoria regional units of Greece. Three ridges join at its highest peak, running towards the north, southwest and east. The Gramos is drained towards the west by the river Osum, towards the northwest by the Devoll, towards the northeast by the Aliakmonas and towards the south by the Sarantaporos. The Gramos is very sparsely populated, the only sizable town being Ersekë (Albania) at its western foot. Other villages in the mountains are Gramos (northeast), Aetomilitsa (southeast), Starje (west) and Plikati (south). Nearby mountain ranges are the Smolikas to the south, Voio to the east and Ostrovicë to the northwest.