Land boundaries:
0 km
Coastline:
101.9 km
Maritime claims: territorial sea: 12 nm exclusive fishing zone: 200 nm
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: Indian Ocean 0 m highest point: Mawson Peak, on Big Ben 2,745 m
Natural resources: fish
Land use: arable land: 0% permanent crops: 0% other: 100% (2005)
Irrigated land:
0 sq km
Natural hazards:
Mawson Peak, an active volcano, is on Heard Island