Whoah there!...Thats too awesome! Slow it down a bit...make it less awesome please!!!

Just kidding...seriously though...I like the idea a LOT...very nicely done...especially the possibilities of exploring the entire body of the creature with some excavation by summoned elementals...

I don't however like the squareness of the levels...I would expect the rooms and areas to be a bit more organic...with vaulted and arched ceilings that conform to the "chambers" of the skull and the cavities of the sinuses the rooms occupy. I imagine the structure would naturally conform to those spaces the skull provides...Maybe grab some cross sections or x-rays of some animal skulls and make the rooms similar to the cavities already in place...

Still...I'm inspired by this piece because its soooo unusual.