DigiNepal
A strange circle on satellite maps turned out to be a 390-million-year-old impact crater
A strange circle on satellite maps turned out to be a 390-million-year-old impact crater
An amateur astronomer searching satellite maps for a Quebec camping spot accidentally discovered a massive ancient impact crater. Scientists later found shatter cones that confirmed the 25-kilometer-wide structure was blasted into Earth roughly 390 million years ago.