NASA scientists using the High Resolution Imaging Science Experiment (HiRISE) camera on board the Mars Reconnaissance Orbiter have captured an image of an enigmatic landform in Athabasca Valles, in the Elysium Planitia region of equatorial Mars. The circular mound spotted by NASA scientists is in Athabasca Valles, north-central Elysium Planitia, Mars. Image credit: NASA / JPL-Caltech / University of Arizona. The circular feature is about 2 km wide....
