Approximately 50,000 years ago, on a continuous plain extending for miles in the high desert plateau of Northern Arizona, out of the northeastern sky, a pinpoint of light grew rapidly into a brilliant fireball. This body was probably broken off from an asteroid during an ancient collision in the main asteroid belt (between the planets, Mars and Jupiter) some half billion years ago. Hurtling about 26,000 miles per hour, it was on a rendezvous course with earth. In seconds, it passed through the earth's atmosphere with little loss of velocity or mass.
As a result of the impact, the crater floor was 700 feet deep; it is now approximately 550 feet deep. The crater is over 4,000 feet across and 2.4 miles in circumference.
As a result of the impact, the crater floor was 700 feet deep; it is now approximately 550 feet deep. The crater is over 4,000 feet across and 2.4 miles in circumference.

