ohh, it's the top secret hide out for the cookie monster and friends! deep underground, tennis court, swimming pool, full size bar, basketball court, track, fitness center, shopping center, grocery store, cooking factory, milk production center, 15 car garage, private jet, run way, three kitchens, 17 bedrooms, 15 bathrooms, a computer complex that puts the NSA to shame, and much, much more. you just need to know the super secret password to get directions, then you have to pass a full body scan and a DNA test to be admitted access to the cave.