- groundsure.com liverpools-deepest-secret-the-…What are the Williamson Tunnels? Figure 1 – historic map of the Mason Street area of Edge Hill, Liverpool from 1849 at 1:1560 scale.
- leonbritton.com williamson-tunnelsThe Friends of Williamson’s Tunnels complete examinations (counting unearthing and overview) on the site and lobbies for its assurance.
- the-elusive.uk archives/category/underground/…I Once again returned to Williamson’s tunnels this time with a group of volunteers that were from Drakelow Tunnels also!
- ancaslifestyle.co.uk williamson-tunnels/Williamson Tunnels are opened on Fridays, Saturdays, and Sundays at this time and booking is required. The price for the tour is £5 for adults.
- tripadvisor.co.id Attraction_Review-g186337-…...one which charges for admission but is more the finished article, and the one I reviewed (The Friends of Williamson's Tunnels), which is still a work in progress.
- en.tripadvisor.com.hk Attraction_Review-g186337-…The Friends of Williamson's Tunnels are the custodians of two fascinating sections of Williamson’s Tunnels.
- http://photographybymichaelwatson.com williamson tunnels…By Edge Hill University. File:Williamson Tunnels entrance.jpg - Wikimedia Commons Williamson tunnels map By Wikimedia Commons.
- tripadvisor.in Attraction_Review-g186337-…The Friends of Williamson's Tunnels are the custodians of two fascinating sections of Williamson’s Tunnels.
- thevintagenews.com 2018/01/27/williamson-tunnels-…Williamson built these tunnels for 30 years, and from his death to this very day, this maze has remained a puzzle to contemporary researchers.
- atlasobscura.com places/williamson-tunnelsA second organization, Friends of the Williamson Tunnels, was founded in 1996, and also leads tours of parts of the tunnels as well.