Chuckawalla 21 is one of the more remote climbs you can get on in RR. We had the whole of Mud Springs Canyon, Global Peak and thus the NE Face to ourselves. Not another soul seen the entire day. My kind of outing. The climbing is quite easy and unremarkable with a lot of bolt clipping. But the canyon descent (not recommended ascent) makes it all worth while. Some bad approach descriptions out there, probably worth visiting my version at summitpost.org. With Joe A, 8 hrs car to car, this is not a grade IV, more like easy III.