Three sites in Kentucky bear the scars of ancient impacts by meteorites: the Jeptha Knob in Shelby County, a site near Versailles in Woodford County, and a site near Middlesboro in Bell County. A meteorite impact usually forms a roughly circular crater, called an astrobleme, and can crack the Earth's crust in a characteristic circular pattern. Astroblemes may show a "rebound structure" where a central core of rock has been brought up from deeper underground by the impact. The three Kentucky astroblemes represent the highly eroded cores of the astroblemes that were situated under the original craters; the crater walls eroded long ago. Each of these structures is characterized by a circular belt of arc-shaped faults cross cut by faults radiating outward from the central core of intensely broken rock. In the past, these structures were referred to as "cryptoexplosive" because their origin was uncertain.
Although meteorites have been found in Kentucky, there are many naturally-occurring and man-made objects that look like or are misinterpreted as meteorites.