All of these explanations seem logical, except that none of them explain the appearance of the mysterious ghost shanty-town. Was this some sort of clue Rivoli left behind for authorities to find him? Perhaps a ploy to encourage other campers?
The key to the mystery seems to lie in a vague comment Rivoli shared before he disappeared: He said he was "taking an astronomy class -- the only thing I'm doing right now." One expert, who asked not to be identified, believes that in light of this evidence, the four tents were most likely constructed to house ancient aliens who are actually the four horsemen of the apocalypse, set to arrive December 21 this year. He also believes that the person who seemed to be Derek Rivoli was none other than the second incarnation of Jesus Christ.
Just look at the number of letters in their first and last names. They match up perfectly.
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