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Lake Baikal, Russia
Maximum depth: 1,642 meters (5,387 feet)
Lake Baikal is not only the deepest lake globally but also the oldest, estimated to be around 25 million years old. Reigning supreme as the deepest and largest freshwater lake on Earth, Baikal is a Siberian treasure. its crystal-clear waters hold 20% of the world’s unfrozen freshwater, a staggering volume that surpasses all the Great Lakes combined. Home to unique species like the Baikal seal, this UNESCO World Heritage Site is a biodiversity hotspot and a testament to the planet’s ancient past.
