yeah, what he said, only also add georgetown, just across a deep evil canyon from forest hill. to get their, go to auburn, then to cool on 49, then take whatever hwy it is that goes to georgetown. in georgetown, turn left on wentworth springs rd, stop at the ranger station about 3 miles up on right and pick up a completely useless map, then keep going another couple miles until you see signs for mace mill staging area. follow the signs. park. ride.
better yet, join the guys from CERA for a work/ride weekend there, and get some local knowledge as far as the trails. there are a few places that i find pretty difficult, but most of it is reasonably sensible, reasonably interesting riding.
mw