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Appalachian Mountains | Definition, Map, Location, Trail, & Facts
Appalachian Mountains - Wikipedia
30 Fascinating Facts About the Appalachian Mountains
Appalachian Mountains - WorldAtlas
Appalachian Mountains - Geology, Plateau, Valleys | Britannica
United States - Appalachians, Geology, Ecology | Britannica
Appalachian National Scenic Trail (U.S. National Park Service)
Geology and Wildlife of the Appalachian Mountains - ThoughtCo
Appalachia - Wikipedia
The Appalachian Mountains - Home to the Iconic Appalachian Trail