Wonders of the National Parks: A Geology of North America

Shenandoah: The Collision of Old Continents (1x15)

Air date: Oct 22, 2015

A hike along the Appalachian Trail is a journey back in time to a continental collision that raised mountains rivalling the Himalayas - now eroded into the Appalachians. Chart the geology of this ancient chain from Shenandoah National Park to Gros Morne National Park in Newfoundland.