Centered in this image is a high-standing mound of material that sits within a large impact crater (the edges of which are not visible). Evident are numerous dark streaks that originate in the higher elevation areas near the center of the mound.
These streaks are possibly areas where the lighter surface dust cover has been disturbed and partially stripped away, revealing a darker layer beneath the dust. The dark streaks fade fairly rapidly as layers of bright dust settle over them.Written by: Brad Thomson (27 October 2007)
This is a stereo pair with PSP_005369_1925 .
More info and image formats at http://hirise.lpl.arizona.edu/PSP_005514_1925
Image: NASA/JPL/University of Arizona