Kaluga Oblast lies in the central part of the East European Plain. The oblast's territory is located between the Central Russian Upland (with and average elevation of above and a maximum elevation of in the southeast), the Smolensk–Moscow Upland and the Dnieper–Desna watershed. Most of the oblast is occupied by plains, fields and forests with diverse flora and fauna. The administrative center is located on the Baryatino-Sukhinichy plain. The western part of the oblast — located within the drift plain — is dominated by the Spas-Demensk ridge. To the south is an outwash plain that is part of the Bryansk-Zhizdra woodlands, with average elevation up to 200 m.