Located in eastern Siberia, Lake Baikal has a surface area comparable to the entire country of Belgium.

Baikal is the deepest lake in the world, plunging to depths of over 5,300 feet, and it holds one-fifth of the planet's total unfrozen freshwater reserve. Formed approximately 20 million to 25 million years ago, it's one of Earth's oldest lakes, too. The waters of Lake Baikal and its surroundings provide a habitat for thousands of animal species, including around 2,000 bird species and 58 fish species. Remarkably, almost two-thirds of the lake's plants and animals, such as the Baikal dolphin, are endemic.

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