This area is is almost completely overlooked for some strange reason. There is a mysterious pinnacle with an obvious viable route with no published history, some good untapped potential to the NW along the main wall and some obvious unpublished lines mixed in with the published ones.
John Bronaugh explained to me in an email that the area was probably visited once or twice by Martin Hackworth and then forgotten. This didn't explain it's obscurity well enough for me. But there is still the mystery as to why this area has never been more thoroughly explored or developed. It is a mix of private and USFS land.
After passing the kiosk you will cross the creek four times. The fourth time you will actually be driving a short distance up the creek bed itself. After the fourth crossing you’ll see a side road on the left. Turn here, cross the creek again and bear right into a field. Park somewhere and head NW up an abandoned logging road, or alternately hike up a horse/4WD trail along the drainage to the west of the field (still heading NW).
Follow the ridge until you see J Rock, the obvious large pinnacle. If you take the alternate approach hike right once you near the wall to find the main routes, and then south along the ridge from Invisible Barrier to reach J Rock