|S-Curve - Lower
About 50 feet above the obvious starting corner of Tres Facile, above and to the right of Black Monday, is a slightly overhanging headwall with two bolted lines. Gas Chamber is the right-most. Start up Tres Facile (5.6 but readily 4th classable) until able to break left to two bolts marking a somewhat contrived line to the base of the overhanging headwall. Puzzle through the strenuous moves above, then cope with the likely pump to the anchors, passing three more bolts en route. Ruckmansí narrative has this as 11b/c (although the topo shows it as 11c, a time-honored tactic of guidebook authors reluctant to pin down a grade), but it seemed harder than Cross Town and Mass Wasting to me.
Above the start for Tres Facile.
Draws, but if skittish about soloing a 5.6 move 15-20 feet off the ground, bring some gear. Lower from anchors; one rope is fine.