|Harmonica Convention (AKA Below Edges)
Approaching free solo height, this problem could maim or kill you. But the rock is clean and solid, the moves long and juggy, and the committing cutting of both feet 15 feet up make this one of the most fun problems anywhere.
On the overhanging West face of Colon Blow boulder, stand start the obvious left line of incut huecos. Go up to the enormous feature jutting out over your head to the right, then top out straight up. Line #7 in the picture.
Don't climb it! Pads and spotters prolly can't help you due to the height and boulder landing.
John Cardwell on Colon Blow.(Photo: Bob Broilo)