The Key

Starts up the access gully to the upper McPherson Cirque. Continue up the gully past another pitch of moderate climbing to a snowfield. Continue to the top of the snowfiled and climb the right-most icefall. Climb steepening ice to more moderate ground, tending rightward under the buttress. Stay true to the line (might be possible to escape further out right) and follow a shallow corner to the rolling snow field near the top. Continue to the ridge and descend the Ladder.