Williamson Tunnels Big Dig - Sep 2019 [Lo Res]

sketchfab

An overview of an excavation/exploration project by Friends Of Williamson Tunnels. This area, adjacent to our base, will have to be backfilled in a few days so I did a photogrammetry scan to show where everything is (approx 600 photos covering the entire site, but cut down heavily to just show the main area). Eventually we’ll be able to get back down there, hopefully, but until then it seemed worth having an accurate 3d model of it. This area shows sections of early 19th century basements from houses built by Joseph Williamson, a curious little tunnel heading under the street, and a small hole which leads into a large, newly-discovered tunnel at least 4m underground and around 13m long, 5-6m wide and who knows how deep! The entrance to the tunnel is through the roof of its brick and stone arched roof, a few bricks had been removed in the distant past so the tunnel could be filled with spoil. We have no idea how deep the tunnel will go due to the spoil but it’s possible it could be 6-10m or more.