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March 31, 2015

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In this  Saturday, Feb. 15, 2014 photo, visitors walk on salt-covered rocks that were once deep underwater at Lake Oroumieh Lake, northwestern Iran.

Ebrahim Noroozi / AP

In this Saturday, Feb. 15, 2014 photo, visitors walk on salt-covered rocks that were once deep underwater at Lake Oroumieh Lake, northwestern Iran.