2 stuffed into the crudely made , home-welded and home-bolted box like a victim of premature burial in an iron coffin , wolf had howled the day away , battering his fists bloody against the sides of the box , kicking with his feet at the double-bolted , dutch-oven-type door at the coffin 's foot until the jolts of pain travelling up his legs made his crotch ache .