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The Bogda Mountains next to the Turpan Depression. Green mountainous terrain at the top of the image. The bottom of the image is purple with a yellow spot on the right side. Groupings of green dots can be seen in the bottom of the image.

The Turpan Depression, nestled at the foot of China's Bogda Mountains, is a strange mix of salt lakes and sand dunes, and is one of the few places in the world that lies below sea level.