a rather surprising geographical feature of antarctica is that a huge freshwater worls's, one of the largest and deepest, lies hidden there under four kilometers of ice. now known as lake vostok, this huge body of water is located under the ice block that comprises antarctica. the lake is able to exist in its located under the ice block of ice because its waters are warned by geothermal heat from the Earth's core. This thick glacier above lake vostok actually insulates it from frigid temperatures (the lowest ever recorded on earth) on the surface
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