Alleghenies -

: The bedrock is primarily sandstone and quartzite, which are extremely resistant to weathering. Outdoor Recreation & Rail Trails

: A sharp, massive escarpment that serves as the Eastern Continental Divide , separating the Mississippi River and Chesapeake Bay watersheds. alleghenies

: The Allegheny Portage Railroad was a 19th-century marvel that used inclined planes to haul canal boats over the mountains. : The bedrock is primarily sandstone and quartzite,

The Alleghenies are a hub for hiking and cycling, often utilizing abandoned railroad corridors that once breached the mountain barrier: alleghenies

: 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.