Temperatures as low as 16 below zero have created what amounts to a frozen ocean wave on Mount Washington, the New Hampshire mountain peak known for notorious weather extremes. The formation looks exactly like something you’d see breaking off Maui, but made of solid ice, photos show.

Meteorologists perched atop the Northeast's highest peak, known for the world's worst weather, took advantage of recent icy conditions to engage in a rather unusual activity: subarctic surfing.