They rise out of the earth, they sweat and starve for a few years, and then they sink back into the nameless mounds of the graveyard and nobody notices that they are gone. And even the graves themselves soon fade back into the soil. Sometimes, out for a walk, as you break your way through the prickly pear, you notice that it is rather bumpy underfoot, and only a certain regularity in the bumps tells you that you are walking over skeletons.