The PDF topo is very rudimentary (not showing corners or specific rock features). Note, the approach to the Main Wall is not straight above the limestone mine but slightly to the left. The fence around the limestone mine was put up by the BLM as a desert tortoise sanctuary (in reality, it was to take control over the mining claim from the operator who had spurious mining practices). So, the land both on the mine and to both sides of the fence is BLM. The home owners to either side across the road have nothing to do with either the approach or the climbing area. The recommended approach is to hop the front gate and head to the fence on the left, inside the mine/sanctuary, parallel said fence on the road running up to the Main Wall. Done this way the approach should only take 15-20 minutes wearing backpacks. The climbing is on limestone with chert edges. Sometimes the routes have ledges one climbs above with pro guaranteed to allow one to hit said ledge, or anchors with no descent hardware.