demyansk1942
Elite Member
Came across this article on another forum. Talks about excavation of the tunnel and it has information that might interest from our community.
https://phys.org/news/2017-08-science-german-officers-tunnelled-welsh.html#jCp
https://phys.org/news/2017-08-science-german-officers-tunnelled-welsh.html#jCp
