This route lies to the far right of Moon Hill's main climbing face, which is on the backside of the arch as you approach it. You climb behind the obvious detached pinnacle to another small area (which, unfortunately, at times serves as a tourist toilet) with several good routes. Moonstruck is probably the best of these, and heads up the center of this patch of wall, and then trends left near the top. Don't go left early (that'll put you on Heavenly Body, 11c) or too far right (that's New Moon, 11b).
The crux is a devious, though short, sequence of crimps with a clip in the middle of it for added value. The top has loose-seeming rock, but I've not seen anything actually come off -- still, obviously, be careful. Fun climbing the whole way.
About 8-10 bolts + fixed 2 bolt chain anchor at the top.