Lenin Peak, highest summit (23,406 feet [7,134 metres]) of the Trans-Alai Range on the frontier of Kyrgyzstan and Tajikistan. Once thought to be the highest mountain in what was then the Soviet Union, Lenin Peak was relegated to third place by the discovery in 1932–33 that Stalin Peak (after 1962 called Communism Peak; now Imeni Ismail Samani Peak) was higher and by the finding in 1943 that Victory Peak was also higher. The peak, formerly Mount Kaufman, was named for the Russian revolutionary and communist leader Vladimir Ilich Lenin; in 2006 Tajikistan renamed it Mount Ibn Sīnā, for the Iranian physician and philosopher Avicenna.
Lenin Peak was discovered by the Russian explorer A.P. Fedchenko in 1871. Its steep flanks are covered with glaciers. The first ascent was made in 1928 from the south by German alpinists included in the First Pamirs Expedition of the Soviet (now Russian) Academy of Sciences . The first ascent by Soviet climbers, from the north, followed in 1934.