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Mentioning it on the page isn't going to happen without a reliable source covering it. Why? Original research. If you start interpreting the site, and explaining things on it, with no reliable source to back you up, then it's OR. You cannot explain the treasure hunt, because there would be no way to verify it took place. Wiki isn't a how-to guide, so you can't post passwords and the lot so that people can play the game themselves. We need reliable coverage of the event. Someone will talk about it eventually. This isn't a scooper site; we don't have to be update by the minute.   (Contact me) 
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