This is not in the chimneys. It is rapping down from about 100' below the Shuksan summit. It's not a bad down climb, but rapping was fun. Tried using a 160' 4mm retrieval line tied to the end of the main rap rope to get the 160' rap with one rapping rope, but the 4mm stretched too much and I just couldn't pull against all the simple drag friction. Another party unhooked it from the belay station. Good they were there at the time.