The image taken after the earthquake shows a large landslide that broke along a spoon-shaped scarp (called the headwall) marked by the break between the tree and brush covered ground uphill from the scarp and the raw yellowish steep slope of bedrock just below the scarp. In the lowest part of the slide you can see individual large blocks of bed rock indicating that the slide did not move as a single mass but more like a viscous fluid. I think I can also see tree trunks, but this may be over interpretation.
In the before image there are what look like deep scratches trending north east. These are not scratches, of course, but are probably related to earlier landslides. This was not a good site for what ever the buildings were.