Its roof has gone, like all the rest, but as you see, something else has supplied its place.

Hold up your lantern, Marris!" The other men looked up and saw what the Squire meant.

Across the tower, at a height of some fifteen or twenty feet from the floor, Nature, left unchecked, had thrown a ceiling of green stuff.

Bramble, ivy, and other spreading and climbing plants had, in the course of years, made a complete network from wall to wall.

In places it was so thick that no light could be seen through it from beneath; in other places it was thin and glimpses of the sky could be seen from above the grey, tunnel-like walls.