Sentinel approach

Verbal description:

Leave the hiking trail at the stream, go up the right side of the streambed on the climbers' trail, and do not go left when the stream goes left. Instead go up to the bottom of the wall and locate the clean right-diagonalling ramp which starts just to the right. Solo up it carefully; there are some exposed lower 5th class moves where if you fall you will die. Jim Adair died in 1978 when he fell from the approach to the Chouinard-Herbert; he was a very gifted climber.