A wide tunnel has been dug into the rock here, its walls and ceiling

braced with thick wooden beams. It burrows its way deep into the

sandstone, though the mine clearly was not designed for extracting

more of the rock. Peculiar crumbling holes, each about as wide as a

human leg, dot the surfaces of the tunnel, but what purpose they

serve or how they got there is not evident. A massive iron door stands

in the eastern end of the tunnel.