I've heard people talk about the dungeon as a "mythic underworld" in Original D&D, with doors that shut themselves and subdued monsters spontaneously losing their ability to see in the dark, but some of the stuff in this draft makes that sound tame compared to how crazy the rest of the world can be! Gary writes:
"Fluxes in the reality of the world will make many things uncertain. Riding over the terrain of the world surrounding the underground labyrinth will always be different. For example, there can be "gates" through which players will enter the primordial past, the world of Barsoom, Lankhmar, or a fantastical moon peopled by whatever creatures you desire. How about Pelucidar? Again, once in such places, how are the players to return? There must be a way somehow, but that is up to the referee to determine and the players to discover. (And who says space is airless in this world?)"
So the terrain around the dungeon will "always" be different? Random gates to far-flung worlds in the middle of the countryside? Man alive, talk about the "wild and woolly" days of gaming!