As Jeff said, we attempted a Cave Canyon-Crest-Gardner Canyon loop only to find (ahem...or not find) the Gardner Canyon trail totally washed away. So we had to backtrack a long way.
Does nothing to take away from the hike though. The Cave Canyon trail is actually wonderful. Lush on the bottom half and a burned-out recovering haunted wonderland on top.
The Crest trail is the star of the show. I must admit I have a new favorite trail in Tucson.
Overgrown and wild, the Crest trail is a showstopper. The meadow at the nameless saddle is worth the effort alone. Plus it's kind of cool that whatever route you choose to access the Crest trail, it's gonna take some work.