With its sheer cliffs, deep, clear water and scenic islands, Crater Lake National Park is a gem sparkling on the crown of the Cascades. Once a towering volcano that collapsed in an ancient eruption, Crater Lake is now the deepest lake in the U.S., fed only by the 44 feet of snow it receives on average every year. Its summer season is brief but breathtaking, drawing campers and hikers to its crystalline beauty. Winter trails and backcountry camping are accessible to the hearty outdoor adventurer.