The objective of this observation is to examine features of a mid-latitude crater.
In the Context Camera (CTX) image (P18_008030_2217) of this area, the crater floor has hollows and a high density of pits. The wall has the shape of the alcoves of gullies with the lower part covered up. Perhaps this crater once had gullies, but is now filled up.
This caption is based on the original science rationale.
Written by: HiRISE Science Team (7 December 2011)
More info and image formats at http://hirise.lpl.arizona.edu/ESP_024473_2205
Image: NASA/JPL/University of Arizona