Take Geology Tour Rd south for about 3.7 miles to pullout #5 (on west side of road, just before the yellow 4x4 sign). The rock formation you see directly to the west about 3/4 of a mile ahead is Jerry's Quarry.
From the left side of the parking lot, follow the worn trail passing the very occasional cairn to the Slashface boulder. From here, take a slight right past a cairn and head for the biggest tree before cutting directly across the wash. Make your way up a small rise and through the flat, then wrap CCW around the formation.
Once you reach the formation's west side, the highest boulder facing west is split by a stunning finger crack. This is Equinox (5.12c). When you first see it, take a left fork and scramble up boulders, then cut right across a slabby boulder to the excellent belay area at the base of the route.
Joshua Tree, CA