Explosive Reaction (IMAGE) Columbia Climate School Caption Death Valley's half-mile-wide Ubehebe Crater turns out to have been created 800 years ago -- far more recently than generally thought. Credit Brent Goehring/Lamont-Doherty Earth Observatory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.