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The Barringer crater was created 50000 years ago by a nickel-iron meteorite with a diameter of approx. 50 metres. Considering the moderate dimensions of the meteorite itself it might be astonishing that a 50 metres piece of matter created a crater of 1200 metres in diameter and a depth of 170 metres. This is due to the high speed of the meteorite hitting the ground: approx. 15 km per second (or 34000 mph). The impact energy was about 10 megatons or more than 600 times the released energy of the Hiroshima atom bomb. The crater is located 43 km east of Flagstaff in Arizona, USA. It has a visitor center with the largest discovered fragment of it in exposition.
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