+Lake Baikal, nestled in [Siberia](/wiki/siberia), is the world's deepest and oldest [freshwater](/wiki/freshwater) lake, holding over 20% of Earth's unfrozen surface freshwater. This ancient rift lake is a natural marvel, home to thousands of unique species found nowhere else on the planet.
+## See also
+- [Lake](/wiki/lake)
+- [Ecology](/wiki/ecology)
+- [Russia](/wiki/russia)
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