3Lake Baikal (1,642 meters)
Lake Baikal in Siberia, Russia, is the world’s deepest freshwater lake. It plunges to a depth of 1,642 meters and holds about 20% of the planet’s unfrozen freshwater. Lake Baikal is also one of the oldest lakes, estimated to be 25 million years old. Its crystal-clear waters and unique biodiversity make it a natural wonder.
