The Central Russian Upland (also: Middle Russian Upland (Russian: Среднерусская возвышенность, romanized: Srednerusskaya vozvyshennost') and East European Upland) is an upland area of the East European Plain and is an undulating plateau with an average elevation of 230–250 m (750–820 ft). Its highest peak is measured at 293 m (961 ft). The southeastern portion of the upland known as the Kalach Upland . The Central Upland is built of Precambrian deposits of the crystalline Voronezh Massif.