The Bucegi Mountains (Romanian: Munții Bucegi; Hungarian: Bucsecs-hegység) are located in central Romania, south of the city Brașov. They are part of the Southern Carpathians group of the Carpathian Mountains. To the east, the Bucegi Mountains have a very steep slope towards the popular tourist destination Prahova Valley (a.o. Bușteni and Sinaia). At a higher elevation is the Bucegi Plateau, where wind and rain have turned the rocks into spectacular figures such as the Sphinx and Babele. The Bucegi is believed to be the Dacian holy mountain Kogainon, on which the God Zalmoxis resided in a cave.
The name of the mountains is derived from Slavic buk meaning "beech tree".
The mountains are grouped in three ranges:
- Bucegi Mountains (Omul Peak - 2505 meters)
- Leaota Mountains (Leaota Peak - 2133 meters)
- Piatra Craiului Mountains (Baciului Peak - 2238 meters)
Pass separates the Piatra Craiului and Leaota ranges; it was marked by border crossings between Wallachia and Transylvania, and was defended by the Bran Castle