Historic Markers Across Tennessee

Flynn Creek Impact Crater

Marker ID: THC 3B 47
Location: Jackson County, Flynn Creek Road, off TN 56
County: Jackson
Waymark: None


Over 360 million years ago, an asteroid or cornet struck this area at more than 10 miles/second forming a crater 2.5 miles across and, in seconds, ejecting 0.3 cubic mile of rock. Deformed limestone beds seen in adjacent cliffs were violently uplifted to form a shattered central peak. This crater, now buried beneath younger rocks, was used by NASAlUSGS in training Apollo astronauts and represents an important class of craters found on other planets and satellites in our solar system.