This is one of the best day use areas that we visited while on a 2 day tour in and around the Valles Caldera!  It has over 250 climbing routes spread out along the East Fork of the Jemez River with something for every level of climber!  The belay areas are nice and flat and the approach will at most take you an hour to get to the furthest walls.  Some of the climbs even allow for setting up top ropes from the tops of the cliffs.  You can access the cattle wall easily from the east parking lot but if you want to walk along the creek then use the parking lot that is to the west.  If you plan on staying overnight then the closest developed campground is the Jemez Falls CG just up the road to the west.