The climbing is no more difficult on that 4th pitch than 5.9, but the pro opportunities are not warm and fuzzy to say the least. The problem is not a fall as much as the decking opportunity on top of the pinnacle from where the belay starts. The crux move or two is right off the deck. The bolt is out right and well beyond the difficult moves. We combined those middle two pitches for a full 200' to the belay to start the 4th pitch. With Brad from Calgary.