Not Oregon's Crater Lake. That island is strange-looking. The Andes make the most sense, but I think the forest at the bottom is the eastern slopes of the Andes. The western slopes (Chile) don't have much forest.
I think that's Wizard Island. And there is a lake just south of Crater Lake, and there is one in that photo. And there is also a large rain shadow east of the Cascades.
The western slopes (Chile) don't have much forest.
Whereas the west slopes of the Cascades are heavily forested.