20141011_153825.jpg Joseph Williamson's TunnelsThumbnailsJoseph Williamson's TunnelsJoseph Williamson's TunnelsThumbnailsJoseph Williamson's TunnelsJoseph Williamson's TunnelsThumbnailsJoseph Williamson's TunnelsJoseph Williamson's TunnelsThumbnailsJoseph Williamson's TunnelsJoseph Williamson's TunnelsThumbnailsJoseph Williamson's TunnelsJoseph Williamson's TunnelsThumbnailsJoseph Williamson's TunnelsJoseph Williamson's TunnelsThumbnailsJoseph Williamson's Tunnels
Selection of plates etc. dug out during the excavations.