Mount Belinda is a stratovolcano on Montagu Island, in the South Sandwich Islands of the Scotia Sea. At 1,370 m (4,490 ft), Mount Belinda is the highest peak in the South Sandwich Islands, a part of South Georgia and the South Sandwich Islands.

Belinda was inactive until late 2001, when it erupted, the eruption lasting until 2007. The eruption produced large quantities of basaltic lava, melting the thick cover of ice that had accumulated while the volcano lay dormant, and "producing a marvelous 'natural laboratory' for studying lava-ice interactions relevant to the biology of extreme environments, as well as to processes believed to be important on Mars." and in 2010 the only activity was from scattered fumaroles and cooling lava.

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