Crater Lake (Klamath: Giiwas) [2] is a volcanic crater lake in south-central Oregon in the Western United States. It is the main feature of Crater Lake National Park and is a tourist attraction for its deep blue color and water clarity.

Crater Lake partly fills one of the most visually spectacular calderas of the world, an 8-by-10-km (5-by-6-mi) basin more than 1 km (0.6 mi) deep formed by collapse of the volcano known as Mount Mazama during a series of explosive eruptions about 7,700 years ago.

2024年11月21日 · Deep Water in a Sleeping Volcano. Crater Lake inspires awe. Native Americans witnessed its formation 7,700 years ago, when a violent eruption triggered the collapse of a tall peak. Scientists marvel at its purity—fed by rain and snow, it’s the deepest lake in the USA and one of the most pristine on Earth.

2023年9月8日 · It is one of the top ten deepest in the world. Unlike other Cascade Mountain lakes, Crater Lake rarely freezes over in the winter due to the heat content of the enormous water volume. To learn about lake ecology, current research, and the Long-term Limnological Monitoring Program, visit Crater Lake Research.

2023年10月23日 · Mount Mazama is one of the major volcanoes of the Cascades Arc. Crater Lake is located within the collapsed caldera of Mount Mazama on the crest of the Cascade Range in southern Oregon about 90 km (55 mi) north of the city of Klamath Falls and about 100 km (60 mi) northeast of Medford.

Stratovolcanoes, also called composite volcanoes, tend to have a steep-sided conical form and highly explosive eruptions. Earlier eruptions built Mount Scott, which lies east of Crater Lake. As time continued, volcanoes began growing to the west building as layers of lava flows and pyroclastic deposits.

2023年11月29日 · Known for its clear blue water, Crater Lake holds about 4.9 trillion gallons. According to the National Park Service, the lake at its deepest point could contain the Statue of Liberty stacked on top of the Eiffel Tower and the Washington Monument — with 100 feet of water still covering Lady Liberty’s torch!

The lake within Crater Lake is the deepest in the USA at nearly 600 m, within the caldera that formed during a major eruption of its predecessor Mount Mazama around 7,700 years ago. Snow mantles the summit of the Wizard Island cone in the foreground.

2010年9月27日 · Crater Lake is 1,932 feet (589 m) deep, making it the deepest lake in the United States. Additional information about Mount Mazama and Crater Lake is presented on the Cascade Volcano Observatory homepage of the U.S. Geological Survey.

2022年12月6日 · The view inside this partially lake-filled caldera is an unprecedented view inside a volcano. It presents geologic evidence of the rise and fall of Mount Mazama, one the biggest Cascade volcanoes. It exposes the layered story of lava flows and pyroclastic deposits.