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Appalachian Mountains - Wikipedia
Appalachia - Wikipedia
Appalachian Mountains | Definition, Map, Location, Trail, & Facts ...
Geology of the Appalachians - Wikipedia
Appalachian Mountains - WorldAtlas
Appalachian Mountains Facts | Britannica
Appalachian Mountains - Geology, Plateau, Valleys | Britannica
30 Fascinating Facts About the Appalachian Mountains for Trivia …
Appalachian National Scenic Trail (U.S. National Park Service)
10 Highest Peaks on the Appalachian Trail