Hoff's Aliner Travels
A Travel Blog for US and Canadian Parks with Geological Notes

Crater Lake National Park
Crater Lake National Park is a United States National Park located in southern Oregon. The park encompasses the caldera of Crater Lake, a remnant of a destroyed volcano, Mount Mazama, and the surrounding hills and forests.

The lake is 1,943 feet deep at its deepest point, which makes it the deepest lake in the United States, the second deepest in North America and the ninth deepest in the world.The impressive average depth of this volcanic lake is due to the nearly symmetrical 4,000-foot (1,200 m) deep caldera formed 7,700 years ago during the violent climactic eruptions and subsequent collapse of Mount Mazama and the relatively moist climate that is typical of the crest of the Cascade Range.

Crater Lake has no streams flowing into or out of it. All water that enters the lake is eventually lost from evaporation or subsurface seepage. The lake’s water commonly has a striking blue hue, and the lake is re-filled entirely from direct precipitation in the form of snow and rain. More about Crater Lake

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