HomeUSACaliforniaJoshua Tree National ParkQueen Valley AreaGeology Tour RoadVirgin Islands AreaVolcano Boulder<Hot Lava5.11a>Magma5.11c5.12btrFA Tony Yaniro and Vaino Kodas, 1981CREATED UPDATED Tick this climbDescriptionProtectionRoutes in Volcano Boulder1Hot Lava5.11aSport2Obsidian5.12bTr 3Magma5.11cTr