I don't post here often, actually only twice before. But I'm going to take a guess at whats in the shed. I don't know if any one else has thrown it out there but the shed looks like its part of a Lumber mill. So the shed Might be A Milling shed with saw blades as you slowly roll by. Just a thought. I Know the PR guy for the park said somewhere that if someone guessed it they would announce it. With all the good guesses I don't see how we haven't gotten it yet. What do you guys think?