Encompassing 423 national park sites, the U.S. National Park System preserves some of Earth's most spectacular geologic features and landforms. From glaciers to hot springs, volcanoes to coral reefs, or canyons to caves, national parks and preserves curate our geologic heritage while sparking the imaginations of tens of millions of park visitors each year.

The fascinating and compelling geologic stories of many of these parks are told in the newest edition of the book Geology of National Parks by David Hacker and David Foster (2019), with contributions from Esther Tuttle and Sherwood D. Tuttle and senior editing by Ann...

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