In some of the coldest regions on Mars, water appears to have recently gushed from just beneath the surface, running down crater walls and steep valleys.
New images suggest present-day sources of liquid water on Mars.
NASA Press Release. Malin, M.C., and K.S. Edgett. Evidence for recent groundwater seepage and surface runoff on Mars. Perennial spring occurrence in the Expedition Fiord area of western Axel Heiberg Island, Canadian High Arctic. All rights reserved.