Roughly 480 million years old, the Appalachian Mountains are the oldest mountain chain in North America. The Appalachians are further broken up into many smaller ranges; the Blue Ridge Mountains, Smoky Mountains, Allegheny Mountains, and the Catskill Mountains to name a few. Located in Western North Carolina and Eastern Tennessee, the Smoky Mountains, and the Blue Ridge Mountains are some of the richest regions in biodiversity in the Appalachians. Great Smoky Mountains National Park hosts more species of salamanders than anywhere else on the planet. Browse through this gallery to see a small fraction of what's out there waiting to be discovered.