Geology
The High Knob area of Stone Mountain forms one of the greatest natural areas in the eastern United States. Today its calcareous heart has been breached by massive erosion to expose an ecologically renowned karst landscape which stretches from the Powell Valley area of Wise County, southwest across the Powell River Valley of Lee County to the Norris Lake of Tennessee. Drainage from High Knob has also formed hydrologically complex conduit systems which have directly led to formation of the magnificent Natural Tunnel and Rye Cove Karst Basin of Scott County, where endemic species such as the Rye Cove Isopod are found.
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