Heard Island topographic map
Click on the map to display elevation.
Heard Island
Heard Island, by far the largest of the group, is a 368-square-kilometre (142 sq mi) mountainous island covered by 41 glaciers; 80% of the island is covered with ice. The Big Ben massif dominates the island: It has a maximum elevation of 2,745 metres (9,006 ft) at Mawson Peak, the historically active volcanic summit of Big Ben, to which the average ascent from shore is steeper than that for any island of comparable size or larger; only seven smaller islands are steeper. A July 2000 satellite image from the University of Hawaii's Institute of Geophysics and Planetology (HIGP) Thermal Alert Team showed an active 2-kilometre-long (1.2 mi) and 50–90-metre-wide (160–300 ft) lava flow trending southwest from the summit of Big Ben.
About this map
Name: Heard Island topographic map, elevation, terrain.
Location: Heard Island, Heard Island and McDonald Islands, Australia (-53.19491 73.25123 -52.97129 73.87675)
Average elevation: 394 ft
Minimum elevation: -7 ft
Maximum elevation: 8,976 ft
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