The climb ascends the left side of the arch to its apex, then heads up to the anchor. Delicate moves to start and then long powerful moves on good holds. Finish on a short crack in the left dihedral.
Location
Park at the south end of the Park and head west to a trail. Head south past the apple field and then up to the visible arch.
As of yesterday there's no trail, so wearing body armor & yielding 2 machetes is recommended. There's a faint road that leads from the southern-most ramada (the trail?) that will take you past a hydrant to the apple trees, but then it's bushwhacking through dense thorn bushes, no matter which way you go. IMO, it's easier to take the service road at the south end of the parking lot, then start heading up to the arch somewhere among the apple trees. Don't go past the arch! There's less bushwhacking if you stay to the north (the parking lot side).
Also... this route is on the north-side of the formation. There's sun to warm up in, under the arch, but only until mid-afternoon (in October).
There is a trail. It is just faint and difficult to find on the way up on your first trip. We tried to put a lot of cairns on it a couple of years ago after the fire, but the heavy monsoon this year may have washed sections out or increased the underbrush in the spots that did not burn. It starts near the water pump piping.