North Of The Wall (S06E04)
S06E04
Title: Beyond the Barrier Plot: An intricate series of stone structures close to Hadrian's Wall was designed to fend off invasions from the North. In addition, a clandestine military installation is hidden away in the heart of the American Midwest, shrouded in secrecy and mystery.
Show
Abandoned Engineering
Episode
S06E04
Air Date
Jul 30, 2020