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Heard Island and Mcdonald Islands Geography - 2024


GEOGRAPHICAL NAMES  Spanish Simplified Chinese French German Russian Hindi Arabic Portuguese


islands in the Indian Ocean, about two-thirds of the way from Madagascar to Antarctica

Geographic coordinates

53 06 S, 72 31 E

Map references

Antarctic Region


total: 412 sq km

land: 412 sq km

water: 0 sq km

Area - comparative

slightly more than two times the size of Washington, DC

Land boundaries

total: 0 km


101.9 km

Maritime claims

territorial sea: 12 nm

exclusive fishing zone: 200 nm




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


highest point: Mawson Peak on Big Ben volcano 2,745 m

lowest point: Indian Ocean 0 m

Natural resources


Land use

agricultural land: 0% (2011 est.)

other: 100% (2018 est.)

Natural hazards

Mawson Peak, an active volcano, is on Heard Island

Geography - note

Mawson Peak on Heard Island is the highest Australian mountain (at 2,745 meters, it is taller than Mt. Kosciuszko in Australia proper), and one of only two active volcanoes located in Australian territory, the other being McDonald Island; in 1992, McDonald Island broke its dormancy and began erupting; it has erupted several times since, most recently in 2005

NOTE: The information regarding Heard Island and Mcdonald Islands on this page is re-published from the 2024 World Fact Book of the United States Central Intelligence Agency and other sources. No claims are made regarding the accuracy of Heard Island and Mcdonald Islands 2024 information contained here. All suggestions for corrections of any errors about Heard Island and Mcdonald Islands 2024 should be addressed to the CIA or the source cited on each page.

This page was last modified 04 May 24, Copyright © 2024 ITA all rights reserved.