| 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
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| Natural hazards Heard Island and McDonald Islands :
| Mawson Peak, an active volcano, is on Heard Island
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| Environment current issues Heard Island and McDonald Islands :
| NA
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| Environment international agreements party to Heard Island and McDonald Islands :
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| Geography note Heard Island and McDonald Islands :
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| Flag description Heard Island and McDonald Islands :
| the flag of Australia is used
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| Agriculture products Heard Island and McDonald Islands :
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| Industries Heard Island and McDonald Islands :
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