It appears that the 'etched terrain'
is part of the debris apron of the
much larger crater seen in the
context image from MGS.
Personally, I'd like to see them
get a good look at some of the
terrain off to the right edge of
Pando and Doug's traverse image.
There's some interesting 'clumps'
there. Also, to the right edge across
from where the path back tracks near
the 'ghost crater'. Appears to be a
dark little crater that with a 'yardang'
type white terrain near it.
Eric P / MizarKey