A circuit of very thin tubes connects the entire perimeter of the tunnel. The tubes go into three separate sculptures that define each of the exhibition halls. One is larger than the other two, and looks like a separate path, similar to an alternate infinity symbol or tail-eating worm. Like organs or intestines, the sculptures are perfused with hot water, so they also function as radiators. The temperature in the rooms is set to the normal body temperature of a wolf, at 38.3 ° C.