| Climate Heard Island and McDonald Islands :
| antarctic
|
| Terrain Heard Island and McDonald Islands :
| 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 Heard Island and McDonald Islands :
| Indian Ocean 0 m
|
| Elevation extremes highest Heard Island and McDonald Islands :
| Mawson Peak, on Big Ben 2,745 m
|
| Natural resources Heard Island and McDonald Islands :
| fish
|
| Land use arableland Heard Island and McDonald Islands :
| 0%
|
| Irrigated land Heard Island and McDonald Islands :
| 0 sq km (1998 est.)
|
| Natural hazards Heard Island and McDonald Islands :
| Mawson Peak, an active volcano, is on Heard Island
|
| Environment current issues Heard Island and McDonald Islands :
| NA
|
| Geography note Heard Island and McDonald Islands :
|
|