Seen here is a snow light at the summit of Mount Washington covered in a wavy pattern of rime ice. The photo was taken at sunrise and shows the incredible patterns the icy winds are capable of creating.

Mount Washington is the highest peak in the Northeastern United States at 6,288 ft (1,917 m) and the most prominent mountain east of the Mississippi River. It is famous for dangerously erratic weather. For 76 years, until 2010, a weather observatory on the summit held the record for the highest wind gust directly measured at the Earth’s surface, 231 mph (372 km/h or 103 m/s), on the afternoon of April 12, 1934. [source]

Hard rime is a white ice that forms when the water droplets in fog freeze to the outer surfaces of objects. It is often seen on trees atop mountains and ridges in winter, when low-hanging clouds cause freezing fog. This fog freezes to the windward (wind-facing) side of tree branches, buildings, or any other solid objects, usually with high wind velocities and air temperatures between −2 and −8 °C (28.4 and 17.6 °F). [source]