Reminds me of the story in Shortwave Magazine years ago... farmer in England decided to dig up what he thought was a buried car on his land, and discovered a complete wwii Y-Service listening station! No-one even knew it was there, as the official records had been shredded at some point. No equipment in it, unfortunately...
Just spent an interesting day with the secretary of the UK Fortifications Club surveying some sites in Fife...an HAA site, an LAA site and some anti-tank blocks on a beach which had been re-used to mount a navigation hazard warning sign-by the crew of a ship he later served on himself!
An interesting day, with another three trillion pics for the collection
Regards,
Gordon