![Crater lake - Crater Lake National Park - Oregon - USA Crater lake - Crater Lake National Park - Oregon - USA](http://goforfun.com.au/wp-content/uploads/Crater_lake_oregon-USA-national-park.jpg)
Crater Lake is a caldera lake in the Crater Lake National Park (Oregon, USA). It’s known for water clarity and a deep blue color. Crater Lake partly fills a 1.2km deep caldera which was formed ages ago by the collapse of the Mount Mazama volcano.
Photo by: Zainubrazvi