The Appalachian Mtns are very, very old, highly eroded folded mountains.
The Appalachian mountains are a fold mountain.
fergenson
fault block
The Appalachian Mountains are the major mountain range in the Eastern US.
The Blue Ridge Mountains are part of the Appalachian Mountains.
The main Mountain range is the Appalachian Mountains.
Rocky Mountain is taller than Appalachian Mountain. But they are both the tallest mountains in North America
The mountains of the eastern US are the Appalachian Mountains.
The Appalachian Mountains are a great deal older than the Rockies.
Appalachian Mountains.
The Appalachian Mountains are in the East, the Rocky Mountains are in the west.
the Appalachian mountain range