HomeUSACaliforniaJoshua Tree National ParkQueen Valley AreaGeology Tour RoadVirgin Islands AreaVolcano Boulder>Obsidian5.12b5.11asportFA Vaino Kodas & Tony Yaniro, 1981CREATED UPDATED Tick this climbDescriptionProtectionRoutes in Volcano Boulder1Hot Lava5.11aSport 2Obsidian5.12bTr3Magma5.11cTr