An astronaut aboard the International Space Station took this Dec. 17, 2023, photograph of the Sulaiman Mountains in central Pakistan. The Sulaiman Mountains form a natural barrier between the plateaus to the west and the Indus River Valley to the east. Winds blowing from the Indian Ocean and Indus floodplain carry moisture and particulates inland, causing a combination of haze, mist, and clouds to form on the windward side of the mountain range.