: The bedrock is primarily sandstone and quartzite, which are extremely resistant to weathering. Outdoor Recreation & Rail Trails
: The region's rich deposits of bituminous coal, timber, and iron fueled the Industrial Revolution, though this legacy includes significant environmental impacts from practices like mountaintop removal. alleghenies
The mountains have shaped American industry and transportation: : The bedrock is primarily sandstone and quartzite,
: An 17.6-mile trek through history featuring two dark, damp, and abandoned tunnels (Sideling Hill and Ray's Hill) left behind when the highway was rerouted. and iron fueled the Industrial Revolution
: A sharp, massive escarpment that serves as the Eastern Continental Divide , separating the Mississippi River and Chesapeake Bay watersheds.