Evidence of crucifixions has been found in Israel. One skeletal foot still had the remains of a hefty iron nail embedded in it, and it appears that these nails were recycled after death of the unfortunate victim. In this case, a knot in the wood seems to have deflected the point of the nail such that the nail could not be removed, so they buried the victim with the nail still attached. Further, the traditional crossbeam was only viable in areas with plentiful lumber. In ancient Judaea there seems to have been rather less wood to be had, so the victim was nailed to a more lightly constructed 'X' frame closer to the ground - which probably would have been the correct form of crucifixion for jesus, thus the story of carrying the cross to the execution site has somewhat disappointing ramifcations.