The 3 D illusion of a deep crevasse in this image is caused by the shading of shallow water near the shoreline and the varying thickness of the receeding sea ice, Caspian Sea, Kazakhstan.

The 3-D illusion of a deep crevasse in this image is caused by the shading of shallow water near the shoreline and the varying thickness of the receeding sea ice, Caspian Sea, Kazakhstan.








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