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Crater Lake, United States
Crater Lake formed 7,700 years ago when Mount Mazama erupted and collapsed, creating a caldera that filled with centuries of rain and snowmelt. At 1,943 feet deep, it is the deepest lake in the US and one of the clearest in the world — its intense blue color comes from its depth and purity. Wizard Island, a volcanic cinder cone, rises 755 feet above the water near the western shore.
explore by interest
The rim sits at 7,100 feet and the park receives 43 feet of snow annually. Rim Drive typically opens fully in late June or July.
July through September for full access. The lake's blue is most intense on clear, sunny days.