I made a quick visit to Wargentin (inaptly nicknamed "the
thin cheese" by some slightly imaginative looney who thought it looked
like a round of cheese because through some quirk it's filled to the
brim with what is presumed to be lava -- but it really looks more like a
manhole cover). This is often an idle pass, but tonight (at bare
sunrise) Wargentin looked very different to me. There were wrinkles and
rilles all over its surface. I checked on Rukl page 70 to see if he
shows them, and he sort of does, but with nothing of the drama they
affect under such ideal light and good seeing. I highly recommend you
put this on your "visit" list for future reference.
Wargentin was interesting -- it was very
apparent how much higher this mare-filled crater was than the craters
surrounding it, and how much darker it was.