Explore the Appalachian Mountains: discover their location, ancient formation, and significant ecological impact on Eastern ...

Scientists reckon they've solved a 180-million-year deep-Earth mystery that could explain why the Appalachian Mountains are still standing. For a long time, it's thought a huge area of hot rock buried ...

Explore Tennessee's diverse geography, from the Appalachian Mountains to the Mississippi River. Learn about its history, ...

And many people believe the high rate of mysterious phenomena in the Appalachian Mountains, a 2,000-mile range that spans Newfoundland to northern Alabama, is due to their geological age.

A new driving-tour map developed by National Geographic and the Appalachian Regional Commission features 28 suggested routes, all reflecting the diversity of the 13-state region that stretches ...