Wonders of the National Parks: A Geology of North America

Crater Lake, Olympic, North Cascades (1x7)

: 22, 2015

Learn how seafloor subduction raised a lofty volcano only to obliterate it in a colossal eruption that created Crater Lake in Oregon. Hundreds of miles to the north, tectonic forces upended the imposing mountains of Olympic National Park and formed the high jagged peaks at North Cascades National Park.