It rises along the North Anatolian Fault and the Black Sea.

This range crosses the provinces of Bolu, Çankırı and Çorum, and its limits are Sakarya River, to the west, and Kızılırmak River, to the east.

[1] The highest place, situated south of Bolu, is an andesitic formation, constituted by a plateau where is situated the highest point of this range, Köroğlu Tepesi, at 2,499 m (8,200 ft) above sea level.

[2] On 21 January 2025, a fire broke out at the Grand Kartal Hotel in Kartalkaya.

[3][4] This geographical article about a location in Bolu Province, Turkey is a stub.