Climate: antarctic
Terrain: Heard Island - 80% ice-covered, bleak and mountainous, dominated by a large massif (Big Ben) and an active volcano (Mawson Peak); McDonald Islands - small and rocky
Elevation extremes: lowest point: Southern Ocean 0 m highest point:
Big Ben 2,745 m
Natural resources: fish
Land use: arable land: 0% permanent crops: 0% other: 100% (1998 est.)
Irrigated land: 0 sq km (1998 est.)
Natural hazards: Mawson Peak, an active volcano, is on Heard Island
Environment - current issues: NA
People Heard Island and McDonald Islands
Population: uninhabited (July 2002 est.)