The only evidence from above that anything had slipped or fallen was in a clay bank in Arnie's Attic, which was clearly (based on the color of the clay) where the clay and rock pile we found in the rear of this section came from. It is possibly the only thing that collapsed. The question is: did it collapse on its own or did falling rocks from above cause it to collapse. We could see no evidence of collapse above it, but our examination was cursory.