 In 1923, Andreev visited the headwaters of Chirchik.He visited the Matcha Mountains, Karategin, Gissar and Yaghnob in 1924.In 1925, under his leadership, the expedition operated along the route of Tashkent, Ura-Tyube, the Zarafshan Valley, Yaghnob, Anzob Pass, Dushanbe, Karategin, Darvaz, Pamirye, Pamir, and Osh.