Also known as a rift lake, Lake Baikal has a maximum depth of 5,387 feet, making it the world’s largest freshwater lake by volume, containing 22-25% of the world’s fresh surface water.

Nestled in the planet's deepest continental rift, Lake Baikal is fed by over 300 rivers and drained by just one, leaving its unreachable bottom more than a kilometer below sea level. Another lake ...