25km meteor crater in rugged Canadian terrain remained hidden for 390 million years

In 2024, an amateur astronomer found a 25km meteor crater in Quebec, Canada, using Google Maps. Scientists confirmed the 390-million-year-old site, now named Uhaachatik Crater, after finding shatter cones and melt rock. Gordon Osinski said the trip was "one of the most arduous expeditions" he had ever taken to study rocks.