(Haha! I love the "as you can see" part.)
As light fills the space, you come across a queer sight. It's obvious that you are in a man-made structure of masoned stone, but it's easy to believe that you are really in a swamp. The ground is mushy with a traveling haze levitating above it, and vines and roots grow all around. Your steps occasionally make a squelching sound, and more than once you've fallen up to the ankle. You can hear the chittering of insects, and see them whizzing around. There are mushrooms in places that give off a phosphorescent light that gives an early green glow to the space, and hangs in the damp air. If you could stretch your mind to remember this is a room, you would see that it was a large hall, and that at the end of it all there are two doors, side by side on the far wall, through the draping flora and eery mist.