51°40'10.01"N 103°51'22.94"E (These are not Google Earth photos)
In April of 2009, astronauts on the International Space Station shot these photos of Lake Baikal, in Russian Siberia. The photos showed two extremely odd molten circles in the ice of the lake. Lake Baikal is the largest and deepest freshwater lake in the world, containing more fresh water that all of the Great Lakes combined. In fact, it contains 20% of all the fresh water on earth! Five miles below the surface is the deepest continental rift on earth, which is still seismically active. There are also hot springs in the area, the thermal welling from which may be causing the mysterious circles in the ice. Another possible explanation could be rooted in the gas hydrates found in the lake-bottom sediments, since Lake Baikal is the only fresh water lake where evidence of gas hydrates exist.
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