3/8" wedge bolt (hardware store variety, not a climbing bolt). Removed from "the Foot" in Ojai. The hole was originally under-drilled and thus not deep enough to accommodate the full length of the bolt. The person placing the bolt apparently pounded on the bolt trying to drive it deeper than the hole would allow. The head of the bolt, the nut, and the threads were all mashed over and severely damaged. There is no evidence that the bolt was ever tightened. The bolt was pulled straight out of its hole using a claw hammer and only moderate pressure.