ooli@lemmy.world to Today I Learned@lemmy.worldEnglish · edit-23 months 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-square31fedilinkarrow-up1215arrow-down17
arrow-up1208arrow-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-23 months agomessage-square31fedilink
minus-squareP00ptart@lemmy.worldlinkfedilinkEnglisharrow-up1·3 months agoTHATS why they left viewing slits!
THATS why they left viewing slits!