HomeUSACaliforniaJoshua Tree National Park*Joshua Tree Bouldering*Central Joshua Tree BoulderingEcho Rock BoulderingEcho Rock BouldersMaster CylinderGas GuzzlerV3+Master CylinderV5V9boulderingFA Rob MulliganUPDATED BY vietnguyen Tick this climbDescriptionRoutes in Master Cylinder1Gas GuzzlerV3+Bouldering2Don't call me BillV9Bouldering 3Master CylinderV5Bouldering