HomeUSACaliforniaJoshua Tree National ParkHidden Valley AreaReal Hidden ValleyAlps RockFormic Acidhead5.10b5.10atradFA Alan Roberts and Todd Gordon, January 1988UPDATED BY vietnguyen Tick this climbDescriptionRoutes in Alps Rock1North Face of The Eiger5.10aTrad 2Formic Acidhead5.10bTrad3Walker Spur5.10aTrad4Bonatti Pillar5.10Tr