Leading crux pitch of the Serpentine Ridge route (pitch 4 per description). Pretty sustained finger crack with an occasional flaring hand jam (stout .8). Nelson and Potterfield guidebook has a photo of a climber on the crack system just right of this one. Not sure if I was off route? Dihedral on left is formed by the “black tower” mentioned in Route Overview Photos section (July 24, 2005).