A rim wall produced by excavation plus shock pushing up the rim.
The rim shows terraces which are created by landslides.
Even on the Moon, slow erosion from meteoritic impacts,
and heating-and-cooling expansion and contraction will eventually
lead to landslides and slumps.
Ejecta also falls outside the rim to about twice the
diameter producing an apron which possibly can be
There may be secondary craters
from the ejecta, but that is
is NOT obvious in the image. So many later or earlier impacts have riddled the ground.