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Seven Geological Wonders of Appalachia

A depression in a rock ridge is filled with water. Clouds fill the valley below and sunrise colors the sky.

The Appalachian Mountains are abundant with magnificent natural wonders. Here’s a sampling of stunning geological features within the region.


Historical Hidden Treasures of Tennessee

By Rachel Ellen Simon Lost Sea / Craighead Caverns Sweetwater, Tennessee is home to the largest underground lake in America. Spanning over 4.5 acres, the Lost Sea lies hundreds of feet beneath a mountain within the Craighead Caverns cave system.


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