Cascade Canyon, The Faultline. This short route, first climbed on July 31, 1978 by Tom and Barry Rugo, ascends the very steep buttress immediately west of and below Icefloe Lake. Some moderate climbing led from the scree at the base of the face to the large platform ledge on the left of the huge dihedral in the middle of the wall. A strenuous F9 jamcrack was used to climb the face above the ledge for 130 feet. A second lead of 100 feet right and into an inside corner led to the top.