Crater Lake Site is located in Oregon, a state in the Pacific Northwest region of the United States. It is the deepest lake in the United States and the seventh deepest in the world. The lake was formed by the collapse of the volcano Mount Mazama about 7, 700 years ago. It is known for its stunning blue color and crystal-clear water. The lake is surrounded by cliffs that reach up to 2, 000 feet in height. It is a popular tourist destination and is part of Crater Lake National Park.