HomeUSAOregonSouthwest OregonCallahans, TheSinger SlabGandpa Dave on the Edge5.10dE-squared = 10c5.10c5.9sporttrFA Mike Heil and Alan Kelly 2003.UPDATED BY vietnguyen Tick this climbDescriptionRoutes in Singer Slab1Gandpa Dave on the Edge5.10dTr · Sport2Michelevator5.9Tr · Sport 3E-squared = 10c5.10cTr · Sport4Davidians without Huecos5.9+Tr · Sport5Mikey Mantle5.10aTr · Sport