Buzludzha (Bulgarian: Бузлуджа, derived from Turkish buzlu "icy") is a historical peak in the Central Balkan Mountains, Bulgaria. The mountain is located to the east of the Shipka Pass near the town of Kazanlak and is a site of historical importance. The peak is 1,441 metres (4,728 feet) high. It was renamed to Hadzhi Dimitar (Хаджи Димитър) in 1942 but remains popularly known as Buzludzha. The summit is built up of limestone and granite. Its slopes are covered with grassy vegetation; its foothills and the neighbouring peaks sustain beech forests. wikipedia
Photogrammetry from video