Hartz Mountains, mountains in southern Tasmania, Australia, extending for 30 mi (50 km) north–south. They are heavily glaciated and rise to 4,111 ft (1,253 m) at Hartz Mountain. The lower slopes, clad in rain forest, give way to peaks that are snow-capped almost year-round, the melting snow draining away to form the Picton, Arve, and Esperance rivers. A national park of 25 sq mi (65 sq km) enclosing the range is accessible from Hobart by the Huon Highway through Geeveston.