Did you know about this hidden waterway beneath a Polish city? historyofpoland - It’s History ON-AIR
Uncover the fascinating history of the Queen Louisa adit, a 14 kilometer tunnel that drained coal mines and transported coal to the Baltic Sea. Today, it’s a one of a kind underground tourist experience. #HiddenHistory #QueenLouisaAdit #IndustrialHeritag
Film osadzony źródło: https://www.youtube.com/watch?v=Gh_JiR3nrfc
