Boltysh crater

The Boltysh Crater is an impact crater in the Kirovohrad Oblast of Ukraine, near the village of Bovtyshka. The crater is 24 kilometres in diameter and its age of 65.17 ± 0.64 million years, based on argon dating techniques, is within error of that of Chicxulub Crater in Mexico and of the Cretaceous–Paleogene boundary . The Chicxulub impact is believed to have caused the mass extinction at the end of the Cretaceous period, which included the extinction of the dinosaurs. The Boltysh impact likely occurred several thousand years before Chicxulub, suggesting the extinction event may have been driven by multiple meteor strikes over an extended period of time about 65 million years ago.
Boltysh Crater is located in central Ukraine, in the basin of the Tiasmyn River, a tributary of the Dnieper River. It is 24 kilometres in diameter, and is surrounded by an ejecta blanket of breccia preserved over an area of 6,500 square kilometres . It is estimated that immediately after the impact, ejecta covered an area of 25,000 square kilometres to a depth of 1 metre or greater, and was some 600 metres deep at the crater rim.

Wikipedia