Using a ground-piercing radar sensor aboard the Mars Reconnaissance Orbiter, a team of scientists created 3-D maps of an equatorial region known as Elysium Planitia and the channels that run underneath the plains.
Hurricane Katrina had turned Mars into a pile of steel spaghetti, dumped its 100-ton derrick under 3, 000 feet of water and mangled pipelines on the seafloor.