Mountain system, eastern Europe. It extends along the Slovakia-Poland border and southward through Ukraine and eastern Romania about 900 mi (1,450 km). Its highest peak, Gerlachovka (in Slovakia), rises 8,711 ft (2,655 m). The Little Carpathians and White Carpathians are its southwestern extensions; the Transylvanian Alps are sometimes called the South Carpathians. The mountains are the source for the Vistula, Dniester, and Tisza rivers. Agriculture, forestry, and tourism are economically important.