Crater Lake is a volcanic crater lake in southern Oregon, formed around 7,700 years ago after the collapse of Mount Mazama. It is the deepest lake in the United States, with a maximum depth of 1,949 feet (594 m). Sacred to the Klamath people, who call it Giiwas, Crater Lake is the centerpiece of Crater Lake National Park and has a deep blue color and exceptional water clarity. It has no inflow or outflow, the waters being replaced every 150 years through evaporation, rain and snowfall. Its best-known landmarks include Wizard Island and Phantom Ship, while the surrounding park offers hiking, fishing and winter recreation. This photograph shows a panoramic view of Crater Lake in winter, as seen from Rim Village, with Wizard Island visible in the background.

Photograph credit: WolfmanSF