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Lake Baikal, located in the southern part of eastern Siberia in Russia, is an incredible natural wonder. It's not just the oldest freshwater lake on Earth, at 20 to 25 million years old, it's also one of the largest and deepest, holding almost one-fifth of the world's freshwater.
Each year, usually from January to May, the lake freezes over. Wind, temperature differences, frost and sun on the ice crust causes cracks and ice hummocks to form. Transparent and turquoise, these masses of broken ice look like shards of glass rising into the sky. They are caused by the slow and unequal pressure in the main body of the packed ice as well as by the uneven structure and temperature.
