ooli@lemmy.world to Today I Learned@lemmy.worldEnglish · edit-21 month agoTIL about erdstall , more than 600 tunnel found across Europe of unknown origin but are believed to date from the Middle Ageswww.atlasobscura.comexternal-linkmessage-square0fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-linkTIL about erdstall , more than 600 tunnel found across Europe of unknown origin but are believed to date from the Middle Ageswww.atlasobscura.comooli@lemmy.world to Today I Learned@lemmy.worldEnglish · edit-21 month agomessage-square0fedilink