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Heard Island and McDonald Islands in the Southern Ocean A map of Heard Island and McDonald Islands. Heard Island, by far the largest of the group, is a 368-square-kilometre (142 sq mi) mountainous island covered by 41 glaciers [22] (the island is 80% covered with ice [2]) and dominated by the Big Ben massif.
Big Ben is the large massif to the bottom right (southeast) of this image of Heard Island, from NASA WorldWind. Big Ben formed about one million years ago. [5] Volcanic activity at the cone has been known since 1881. An eruption occurred in 1993. [6] Satellite images detected eruptions during 2000.
As a result of volcanic activity since the 1980s, the size of the island doubled and the height rose by 100 metres (330 ft). The island's area is now reported as 2.45 square kilometres (0.9 sq mi) and the highest summit is at least 230 metres (750 ft) high. The most recent eruption is thought to have been on 10 August 2005. [4]
Mawson Peak is an active volcanic summit of the Big Ben massif on Heard Island, an external Australian territory in the Indian Ocean.. With an elevation of 2,745 metres (9,006 ft), it is the third highest peak in any state, territory or claimed territory of Australia, [3] higher than the 2,228-metre (7,310 ft) Mount Kosciuszko, and surpassed only by the 3,490-metre (11,450 ft) Mount McClintock ...
Island Highest point Height Area (km 2) average slope [1] Country or region Other countries or territories on island 1: New Guinea: Puncak Jaya: 4884 m 16,024 ft 785753: 0.00977 Central Papua Indonesia Papua New Guinea: 2: Hawaiʻi: Mauna Kea: 4207 m 13,802 ft 10430: 0.073 Hawaiʻi United States: 3: Borneo: Mount Kinabalu: 4095 m 13,435 ft ...
Unnamed location on Lagos Island: −0.2 m −0.7 ft: 2419 m 7,937 ft Niue: Unnamed location near Mutalau on Niue: 68 m 223 ft South Pacific Ocean: sea level 68 m 223 ft Norfolk Island: Mount Bates: 319 m 1,047 ft South Pacific Ocean: sea level 319 m 1,047 ft Northern Mariana Islands: Mount Agrihan on Agrihan: 965 m 3,166 ft North Pacific Ocean ...
Heard Island Australia (Heard ... (10,274 mi). Its height is first exceeded by Tirich Mir in the Hindu Kush. Mont Blanc is the highest mountain of the Alps.
They are located about 75 km from Heard Island. McDonald Island is the largest of the islands, at around 1 square kilometre (250 acres) in area. It has been the main focus of volcanic activity in recent times. Prior to 1996, McDonald Island had been a flat green island whose pumice beaches provided a great nesting area for penguin breeding. The ...