Background of the word Baikal

Lake Baikal sounds like this in Buryat language: Байгал нуур, Mongolian: Байгал нуур, Baygal nuur, etymologically meaning, in Mongolian, "the Nature Lake".

This is a rift lake in Russia, located in southern Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast.

Lake Baikal is the largest freshwater  lake by volume in the world, containing roughly 20% of the world's unfrozen surface fresh water. With 23,615.39 km³(5,700 cu mi) of fresh water. With a maximum depth of 1,642 m (5,387 ft).Baikal is the world's deepest lake. It is considered among the world's clearest  lakes and is considered the world's oldest lake— at 25 million years.It is the seventh – largest lake in the world by surface area.