About 50,000 years ago, a meteorite struck the Earth at over 26,000 mph, forming what is now one of the best-preserved meteorite impact sites in the world. Nearly a mile wide and 500 feet deep, Meteor Crater (also known as the Barringer Crater) was once mistaken for a volcanic site. It played a role in NASA's Apollo training during the 1960s Today, a visitor center offers interactive exhibits, a theater, and sweeping views from the crater's edge.