The Pamir Mountains in Tajikistan lie in Gorno-Badakhshan Autonomous Province (GBAO) in the east half of the country. The northern border is formed by the Trans-Alay Range (Independence Peak , Kyzylart Pass ). The highest peak is Ismoil Somoni Peak () (formerly known as Stalin Peak and Communism Peak), on the north-western edge of GBAO. It lies between Ibn Sina Peak () (also known as Lenin Peak) on the border with Kyrgyzstan to the north and Peak Korzhenevskaya () in Academy of Sciences Range () further south. The southern border is formed by the northernmost ridges of the Karakoram Range, with Mayakovskiy Peak (), Karl Marx Peak (), Engels Peak (), and Concord Peak () stretching west to east along the border to Afghanistan.