Egh..Show me something I haven't seen with aerial shots of PKI then I'll be impressed. You can only take so many pictures of the same thing.
As for the tarp, it's there to shield the maintenace guys from the elements while they work on that section of track. Notice the fresh wood above the tarp leading into the second hill. Oh and that man lift is there year-round Bobby. Drop Zone wasn't running either. It's called maintenace mode.