| Location | island in the South Atlantic Ocean, southwest of the Cape of Good Hope (South Africa) |
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| Geographic coordinates | 54 26 S, 3 24 E |
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| Zone | Africa |
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| Area | total: 49 sq km land: 49 sq km water: 0 sq km |
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| Land boundaries | 0 km |
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| Coastline | 29.6 km |
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| Maritime claims | territorial sea: 4 nm |
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| Climate | antarctic |
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| Terrain | volcanic; coast is mostly inaccessible |
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| Elevation extremes | lowest point: South Atlantic Ocean 0 m highest point: Olav Peak 935 m |
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| Natural resources | none |
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| Irrigated land | 29.6 km |
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| Natural hazards | NA |
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Environment - current issues | NA |
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| Geography - note | covered by glacial ice; declared a nature reserve |
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