Boltysh crater Boltysh crater The Boltysh Crater (Bovtyshka Crater) is an impact crater in the Kirovohrad Oblast of Ukraine, near the village of Bovtyshka. The crater is 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
Ritland crater buried under a several kilometre thick mountain chain. The overlaying mountains were later eroded, and the crater was again exposed. Ritland crater The Ritland crater is an impact crater at Ritland farm in Hjelmeland municipality in eastern Rogaland county, Norway. The crater is about east of the village of Hjelmelandsvågen and about south of the Jøsenfjorden. The crater is about in diameter, and was created when a meteorite with an estimated diameter of struck here about 500–600 million years ago. The crater was later buried by sediments, of which it has been partly recovered. The structure was first discovered as