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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.
There is a small group of islets and rocks about 10 kilometres (6 mi) northeast of the northern coast of Heard Island, consisting of Shag Islet, [5] Sail Rock, Drury Rock, and Black Rock. They total about 1.1 square kilometres (0.4 sq mi) in area. Morgan Island is 2 kilometres (1 mi) east of Cape Bidlingmaier on Heard Island.
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 ...
Heard Island from a boat facing southwest from approximately the Shag Islets Field party, roped together, explore badly crevassed glacier - Heard Island 1950s. Heard Island is a volcanic island in the Southern Ocean that is 80% covered in ice. [1] The island is cold and steep, and experiences high levels of snowfall. [2]
Heard Island is an important breeding site for macaroni, eastern rockhopper, gentoo and king penguins. Endemic species or subspecies are the Heard shag and the black-faced sheathbill. The surrounding waters are home to numerous species of albatross and petrel , some of which breed on the islands, including the endangered southern giant-petrel ...
Allison Glacier) is an ice stream on the west side of Heard Island in the southern Indian Allison Glacier flows from Big Ben massif down to the sea to the south of Cape Gazert . [ 6 ] To the north of Allison Glacier is Vahsel Glacier , whose terminus is at South West Bay , between Erratic Point and Cape Gazert.
Geography of Heard Island and McDonald Islands (1 C, 1 P) T. Treaties extended to Heard Island and McDonald Islands (15 P)