Explosive Supervolcanoes May Have Rocked Ancient Mars

Ancient Mars may have harbored giant, explosive "supervolcanoes," new research suggests. By examining an extremely old part of Mars called the Arabia Terra region, scientists have found what could be the remnants of a supervolcano.



via LiveScience.com http://www.livescience.com/40139-supervolcano-eruptions-rocked-ancient-mars.html