http://good-times.webshots.com/album/560682252EMzMDh
pics taken by a trusted friend and ally at GOE.
note the scratches on Panel 15 East.
Investigation is ongoing.
National Park Staffers at The Wall have opined this could be nothing but vandalism.
The event apparently occurred on the night of 9/7.
It was noticed on Saturday by visitors and reported to NP folks on the scene.
The cleanup (!) didn't begin until Monday, when NP Police were apparently notified and began their investigation.
I'll see for myself Saturday.