That was one of the coolest parts of the game for me. Just shocking that you could find a way to travel through some "in-between" spacetime reality and end up in another part of the world, maybe not devastated by whatever destroyed the surface. Its some very imaginative sci-fi right there. In most of these post-apocalyptic games, you only get a chance to explore one area. But at least here they give you a chance to see what other parts of the world are like. And the music is pretty amazing.
What's even better is there is a chance of finding more of these areas by imbibing more of the secret brew. Very interested to see if I can discover anything else