Boltysh crater

The Boltysh Crater is an impact crater in the Kirovohrad Oblast of Ukraine. The crater is 24 kilometres (15 mi) 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 the Cretaceous–Paleogene boundary (K–Pg 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.^[2]

• http://en.wikipedia.org/wiki/Boltysh crater