This seems to be a remnant of volcanic cone that has been partly destroyed by an explosive or erosive process. This public request via HiWish wants to use this image to help reveal the exact mechanism how this feature was formed. The scene is in Claritas Fossae, a graben-filled highland located between the lava plains of Daedalia Planum and Solis Planum. This region of Mars had very active tectonism and volcanism.