Monday 8 September 2014
Crater Lake
is a caldera lake in the western United States, located in south-central Oregon.
It is the main feature of Crater Lake National Park and is famous for its deep
blue color and water clarity. The lake partly fills a nearly 2,148-foot -deep
caldera that was formed around 7,700 years ago by the collapse of the volcano Mount Mazama.
There are no rivers flowing into or out of the lake. Source
