Meteor Crater is a meteoriteimpact crater approximately 43 miles (69 km) east of Flagstaff, Arizona, US. It was created about 50,000 years ago during the Pleistoceneepoch. The object that excavated the crater was a nickel-iron meteorite about 50 m (160 ft) across, which impacted the plain at a speed of several km per second.Photo: National Map Seamless Server, USGS