The only ways in or out of the room would have been the tunnel they just came through, or the small, extremely dirty old window directly facing their tunnel. Everything, the old crumbling chair and table are covered with a thick grey layer of the dust, painted red by Mel's wand glow.

Tyler, upon entering sits a moment to look around the room. "Looks like swallows nested in here once...or mice...lookit that piece of glass missing..."