There are innumerable sinkholes in Tennessee, and the number is growing. The table above lists only those sinkholes with depths greater than 100'. The depth is estimated from USGS digital elevation data (10m DEM). Big Sink in White County is the deepest (261.4'), but Grassy Cove, a National Natural Landmark, has the biggest area, 3 miles by 6 miles. The list may not be complete.
There are serveral impact craters in Tennessee, but they are not visually significant.
GSMNP landforms (TN/NC) BSF landforms (TN/KY)
Revised Fri, 10 May 2013 07:46:39 -0400