Johnsonville Impact Crater

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Map of watershed showing Lynches River and Pee Dee River.

The Johnsonville Impact Crater or the Snow's Island Crater is a circular geophysical feature that has been interpreted by some scientists as an impact crater, situated at the junction of Lynches River and the Pee Dee River in South Carolina. Snow's Island, at that point, is believed to be the upthrust of the center after the impact. This eight-mile-wide crater is not well defined at the surface and was discovered by magnetic anomalies and supported by the study of well drilling cores. Supposed impact breccia was found in these cores.


Coordinates: 33°49′N 79°22′W / 33.817°N 79.367°W / 33.817; -79.367