I am a very old man. How old I do not know. It is possible I am a hundred, maybe more. I cannot tell because I have never aged as other men do. So far as I can remember, I have always been a man of about thirty. I appear today as I did forty years ago. Yet, I feel that I cannot go on living forever. Someday I will die the real death from which there is no escape. I do not know why I should fear death. I who have died two times and am still alive. I have never told this story. I know the human mind will not believe what it cannot understand. I cannot explain what happened to me. I can only tell of the ten years my dead body lay undiscovered in an Arizona cave.