Screaming winds

A piece of Mars: This image is way up high on the Tharsis Montes on Mars, at an elevation of 5900 m (19,350 ft). At night the wind comes screaming down from some of the tallest mountains in the Solar System: Pavonis Mons at 14,000 m (45,900 ft) and Arsia at 16,800 m (55,100 ft). For reference, Mt. Everest is 8,848 m (29,029 ft) high. On Mars, the winds that come down these mountains carve the surface – here they have eroded deep grooves into two impact craters. (HiRISE ESP_031786_1785, NASA/JPL/University of Arizona)