||Lake Vostok may be the coldest, deepest and most southerly lake on earth. Vostok is thought to be one of the less than twenty ancient lakes on earth, although the lake's exact age is unknown. Vostok's water is considered to be the most pure on earth, since it has remained untouched beneath 4km of ice for its entire lifespan.
Lake Vostok sits beneath a Russian research station that has seen the lowest temperatures ever recorded on this planet: minus 126.9 degrees Fahrenheit (53 degrees Celsius).
Lake Vostok is the largest of over 70 sub-glacial lakes on Antarctica.