Crater Lake – National Park Service
Crater Lake – National Park Foundation
Crater Lake, located in Southern Oregon’s Cascade Mountains, is the deepest lake in the USA and one of the clearest globally. Formed 7,700 years ago when Mount Mazama erupted and collapsed, it now fills a caldera with 1,943 feet of depth. The lake’s pristine blue waters are primarily fed by snowfall. Crater Lake National Park spans 183,224 acres, offering diverse habitats and stunning landscapes, making it a significant site for both scientific study and natural beauty.