Descending to Underhill Couloir: getting to the class 3 slabs

Come down from Thunderbolt to right before the most prominent gendarme. Take a right here (left takes you to exposed class 4 slabs). Somewhere in the area of the arrow, find the easiest way to enter the crack system. You should be able to see it roughly all the way till the end (when you enter the class 3 slabs). Keep looking for the class 3 slabs or you might go down too far below. (Photo: Patrick Sanan)