The easternmost ridge of the Southern Urals - Irendyk located in the east and south-east of the Republic of Bashkortostan. It passes through the territory of Abzelilovsky, Uchalinsky, Haybullinskogo, Baimak areas. The total length of the ridge is 135 kilometers. Mountain ridge formed by limestone, porphyries, diabase and places Devonian volcanics. Taiga forest covers the northern part of Irendyk, fescue-feather grass steppe - south.