At Crater Lake, with Wizard Island on the right. 7,700 years ago, Mt Mazama erupted and collapsed. The hole which remained filled with rain and melted snow, forming Crater Lake. It is 1943 ft deep, the deepest lake in the US. The lake is 5 miles wide and the cliffs surrounding it reach heights around 2,000 ft. This is one of the most awesome sites I've ever seen.