Deep heat beneath the Appalachian Mountains may be linked to an ancient rift with Greenland, helping explain why the range is ...

Roughly 124 miles (200 kilometers) beneath the Appalachian Mountains in New England lies the aptly named Northern Appalachian ...

A bold new theory reimagines the NAA as a "Rayleigh–Taylor instability"—a geological term for when heavy, cold rock begins to ...

Great Smoky Mountains National Park straddles the mountain ridges of Tennessee and North Carolina, drawing visitors from ...

Volunteers are still rebuilding parts of the iconic Appalachian Trail in eastern Tennessee nearly a year after Hurricane ...

Maryland's second largest state forest is a lush, gorgeous area that's perfect for camping year-round, including primitive sites and developed campgrounds.

In a rugged patch of the Appalachian Trail in eastern Tennessee, volunteers size up a massive, gnarled tree lying on its side ...

Lots of folks in the Mid-Atlantic looked forward to a beautiful Tuesday afternoon only to encounter gloomy skies and frigid temperatures—and the Appalachian Mountains are to blame.