Forrest Shearer, Ryland Bell, Mitch Tölderer, and Bibi Tölderer-Pekarek endure long approaches and precarious climbs to access couloirs deep in Italy's Dolomite range. Four of the world's best splitboard mountaineers find what they call "the weakness in the wall"--literally the only ridable way down these cliff-ridden crags. The sometimes tight, sometimes remarkable steep couloirs they encounter test their limits of precision riding and speed management.