Begin by stemming your way up an ever-steepening obvious wide slot (this is where the 4" piece may come in handy, although smaller gear options exist deeper in the fissure). Pull through the bulge, gain the ledge, and continue up the broken dihedral (same finish as for Route 19).
By George Perkins Administrator From: Los Alamos, NM Mar 22, 2009 rating: 5.9
The easiest way to climb up to an anchor on this route is to begin as for "Route 21", moving left midway up. Probably this goes at 5.8, as it skips the cruxes of either route.