Why is such a tunnel needed? (media.mas.to) I found such a photo on the Internet and became interested in what function such a structure could perform.
Suffragette-defaced Edward VII penny with subversive political graffiti (media.mas.to) alt textEdward VII penny with the words “VOTES FOR WOMEN” carved into it...
Etruscan rhyton in the shape of a dog's head, terracotta, 475 BCE (media.mas.to) Photo: Museo Nazionale Etrusco