The Pamir Mountains are a mountain range in Central Asia formed by the junction of the Himalayas with Tian Shan, Karakoram, Kunlun, and Hindu Kushranges. They are among the world’s highest mountains, and since Victorian times, they have been known as the "Roof of the World", presumably a translation from Persian.
In other languages they are called: Kyrgyz Памир тоолору Pamir Toolori; Persian:رشته کوه های پامیر Reshte Kūh-hāye Pāmīr; Tajik: Ришта Кӯҳҳои Помир Rishta Kuhhoyi Pomir; Pashto: د پامير غرونه Da Pamir Gharuna; Uyghur: پامىر ئېگىزلىكىPamir Ezgizliki; Urdu: پامیر کوهستان Pamir Kuhestan; simplified Chinese: 葱岭; traditional Chinese: 蔥嶺; pinyin: Cōnglǐng; Wade–Giles: Ts'ung-ling or "Onion Range" (after the wild onions growing in the region). The name "Pamir" is used more commonly in Modern Chinese and loaned as simplified Chinese: 帕米尔; traditional Chinese: 帕米爾; pinyin: Pàmǐ'ěr.
The precise extent of the Pamir Mountains is debatable. They lie mostly in Gorno-Badakhshan province, Tajikistan and Badakshan Province, Afghanistan. To the north they join the Tian Shan mountains along the Alay Valley of Kyrgyzstan. To the south they join the Hindu Kush Mountains along the Wakhan Corridor in Afghanistan and Gilgit–Baltistan in Pakistan. To the east they may end on the Chinese border or extend to the range that includes Kongur Tagh which is sometimes included in the Kunlun Mountains.
Its three highest mountains are Ismoil Somoni Peak (known from 1932–1962 as Stalin Peak, and from 1962–1998 as Communism Peak), 7,495 m (24,590 ft); Ibn Sina Peak (still unofficially known as Lenin Peak), 7,134 m (23,406 ft); and Peak Korzhenevskaya (Russian: Пик Корженевской, Pik Korzhenevskoi), 7,105 m (23,310 ft).
There are many glaciers in the Pamir Mountains, including the 77 km (48 mi) long Fed chenko Glacier, the longest in the former USS Rand the longest glacier outside the Polar region.