"The right hand or northern warder of the gateway is more wedge-shaped than tabular, and contains within it a cavern, which we penetrated with some difficlty by a small aperture opening near the base of the western side. Twelve feet of prostrate squeezing brought us into a vault about fifty feet long, ten feet high, and a dozen wide. We lighted our candles, but there was not much to see. The walls of the hollow were damp; but there was no dripping water, and of course, in a gritty rock like this, there were no stalacites or secondary formaions of any kind."