Here is something strange found in two different locations on Vesta...
http://dawn.jpl.nasa.gov/multimedia/ima ... l_full.jpgIn this image, obtained by the framing camera on NASA's Dawn spacecraft, a set of three craters, informally nicknamed "Snowman" by the camera's team members, is located in the
northern hemisphere of Vesta.
http://dawn.jpl.nasa.gov/multimedia/ima ... l_full.jpgIn this image, obtained by the framing camera on NASA's Dawn spacecraft, various craters are visible in the
southern equatorial region of the giant asteroid Vesta.