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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.
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.
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.
The island is named for her husband, Captain John Jay Heard, who alongside Fidelia is credited with first spotting the landmass on November 25, 1853. [1] The island's Fidelia Isthmus is named for Fidelia herself. [1] A view of Heard Island from a boat. Fidelia was born in Easton, Massachusetts, in 1822.
Map of the islands. This is a list of the birds of Heard Island and the adjacent McDonald Islands in the southern Indian Ocean. For other animals there, see List of non-avian fauna of Heard Island and McDonald Islands. The avifauna of Antarctica include a total of 47 species, of which 1 is endemic.
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 ] There are many glaciers, which descend for up to 7 kilometres (4.3 mi) from up to 2,400 metres (7,900 ft) down to sea level.
Cape Arkona is a rocky headland between the mouths of Lied Glacier and Gotley Glacier on the southwest side of Heard Island in the southern Indian Ocean. The feature appears to be roughly charted on an 1860 sketch map prepared by Captain H.C. Chester, an American sealer operating in the area during this period.
Mount Dixon) is a snow-covered stratovolcano, 705 metres (2,310 ft) high, standing 0.7 nautical miles (1.3 km) west of Anzac Peak on the Laurens Peninsula, Heard Island [1] [2] The feature appears to have been roughly charted on an 1860 sketch map by Captain H.C. Chester, an American sealer operating in the area during this period.