What is the deepest lake in the world?

Lakes ranked by maximum depth. This list contains all lakes whose maximum depth is reliably known to exceed 400 metres (1,300 ft) Geologically, the Caspian Sea, like the Black and Mediterranean seas, is a remnant of the ancient Tethys Ocean. The deepest area is oceanic rather than continental crust. read more

The World's Deepest Lake Lake Baikal in southern Russia is the world's deepest lake. It is an estimated 5,387 feet deep (1,642 meters), and its bottom is approximately 3,893 feet (1,187 meters) below sea level. read more

Lake Baikal. A UNESCO World Heritage Site, Baikal Lake in Russia at 5,387 feet is the world’s deepest, as well as being the oldest lake in the world at 25 million years old. It is 2,000 feet deeper than the Caspian Sea which is the third deepest lake in the world. read more