The mysterious object sitting in Lake Michigan
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CHICAGO (CNN) -- OK, so it's definitely not the Loch Ness Monster. It's not even alive. But Lake Michigan is indeed harboring a mysterious object.

Right where the Chicago River enters the Great Lake sits an oak construction the size of a bus and shaped like a zeppelin.

Nobody can say what exactly it is, and it's in the way -- slated to be demolished by the Illinois Department of Natural Resources when it revamps the basin that is currently the object's home.

But not if Sam Frank of the Underwater Archaeological Society of Chicago has anything to say about it. Frank is trying to organize a moving party to get the big wooden thing out of the way, and hopefully leave it available to divers in a safer location.

And Frank would be delighted if someone could step forward and explain just what the object is and how it came to rest at the bottom of Lake Michigan.