The long Arpa Valley is located in the south of Naryn region. Its dimensions are 60 by 32 km. From all sides the valley is surrounded by mountains: Ferghana, Torugart, At-Bashy ridges and mountain ranges Ortok-Too-Too and Jamal.
Arpa Valley is lies at 2,900 m above sea level. The climate here is harsh enough: winter is cold; summer is warm, but short. Snow depth may exceed 60 cm. Meadows of the valley are used as pasture for livestock.