Diamond Buttress is a small collection of routes on a short cliff, just East of the Pond on the South side of the road. One older sport route (apparently 5.10+) already exists so it is possible that this area has another name. Aaron Collins has been establishing the new routes, including a couple of quality 5.8s. Just right of them is Monster Trucks.

From what we can gather, Wounded Knee Wall is just across the wash on the same side of the road.

Park in the smaller pullout immediately east of the parking lot that wraps around a rocky mound (this large pullout is for the Pond.) The pullout for Diamond Buttress is also on the south side of the road. Follow a relatively obvious trail down to the wash. Trend right to pass a few larger boulders on your left. Cross a large slab and head straight up the steeps at the end of the slab. Duck under a tree or two and you'll find a nice belay area from which you can climb multiple routes without moving your rope bag.