Go here http://www.blm.gov/utah/price/SanRafaelDesert.htm 
 
Or Here http://www.oz.net/~geoffsi/sw2001-web/index-719.htm 
 
Or Here http://www.emerytelcom.net/users/lhardy/root/castlerock/maps/coalwash/ 
 
And here http://www.utahmountainbiking.com/trails/devils.htm 

or this one is a recent trip thru Ten Mile Canyon  http://www.seuohvclub.org/tenmilepic.html  (this looks really fun!)