Crater Lake is a beautiful lake in Oregon.
It is very deep and sits in a big hole made by a volcano.
This volcano is called Mount Mazama, and it erupted a long time ago, about 7,700 years ago.
The water in the lake is a bright blue color.
You can drive around the lake to see the views.
In winter, snow can close the roads.
If you want to see the lake up close, you can hike down to the shore, but it is a hard hike.