The Odessa Crater was formed in prehistoric times when a shower of nickel-iron meteorites collided with the earth. The crater, the second largest in the nation, is approximately 550 feet in diameter and was originally 100 feet deep. Over the centuries, desert winds silted the crater almost level with the surrounding plains. It now appears as a shallow, nearly circular depression surrounded by a low, rock-buttressed rim. The site was not identified as a meteor crater until the 1920s. An adjacent museum and visitors center has exhibits on meteorites, tektites, meteorite impact products, as well as historical videos and related items of interest with an emphasis on material from outer space. Just west of Odessa off I-20, exit 108, follow signs to crater site. Donations accepted.