haha jumping in a stream is optional :]
the lodge is not built around the fire, the fire is outside of the lodge. the rocks are brought in from the fire into the lodge.
the sweat lodge's armiture is dome shaped and made of saplings. tons of blankets and tarps cover the armiture to keep the heat in.
i will talk more of tom brown's philosophies and the treasure of fire tending another time, i'm far too tired to get into it. (went hiking and canoeing on the mullica river today :])