The Pinnacles are hard to find if you have never been there before. From OC, take the 91 East, 215 North, 10 East, 30 North, 330 North, and then the 18 into Big Bear. Run onto the 38 when you hit the 18 and 38 intersection. Turn left off 38 ono 3N09. Turn right on 3N16. If you have 4 wheel drive you can try to take 3N04 which will lead you right to the climbs. If you don't, find a place to park and hike it.