I'm quite sure I'm talking Castle Valley. It's been a very long time and I'm operating by recall. I was thinking Fisher Towers was in Castle Valley.
As for the 100 mile trail, I'm trying to figure out what it is doing. We have a fantastic trail system here just outside of Henderson (Las Vegas) and I'm hoping this trail is simular.
River Mountain Trail Las Vegas http://www.rivermountainstrail.com/
Moab Canyon Pathway http://www.discovermoab.com/moab_canyon.htm