Wonders of the National Parks: A Geology of North America

Denali to Gates of the Arctic (1x13)

: 22, 2015

The story of the tectonic train wreck that built Alaska is written all over the three largest national parks in the U.S.: Wrangell-St. Elias, Gates of the Arctic, and Denali. These remote preserves encompass America's tallest mountains, all built by subduction zone processes.