The train climbs and descends the rugged terrain of the Appalachian Mountains, snaking its way ... Vehicles — even bicycles — can cause erosion, disturb wildlife, and damage sensitive ...

Park visitors wanting to get a taste of the Appalachian Trail can hop on the famous footpath at Newfound Gap for an 8-mile ...

The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion and glacier activity this amazing formation was created ( Kiley Williams) ...