Lake Baikal, Russia

Photograph by Alexander Nemenov

Siberia’s Lake Baikal is the deepest lake in the world—at over a mile (1,700 meters)—and holds an incredible 20 percent of Earth’s unfrozen fresh water. Formed some 25 million years ago, it’s also the world’s oldest lake. Because of its age and isolation, hundreds of aquatic species evolved here that are found nowhere else on the planet.

Posted on February 19, 2011, in Nature, Traveling and tagged , , , , , , . Bookmark the permalink. Leave a comment.

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