Man. Some of you dudes watch too much tv. If I had to take a wild ass guess I’d say he either walked 200 miles in the wrong direction(not real likely in my opinion) or he slipped on a rock and smacked his head or something. Probably laying dead in a creek tucked under some willows.
Yeah, it's 99.9% probable that he's laying there, somewhere. Highly unlikely that he was murdered or that he escaped to Manila. Ditto for an alien abduction (lol).