10 Medieval Dungeons Where Prisoners Left Messages That Still Scare Archaeologists

10 Medieval Dungeons Where Prisoners Left Messages That Still Scare Archaeologists In the lower reaches of St. Andrews Castle in Fife, Scotland, conservation archaeologists working on the site's infamous bottle dungeon found something beneath centuries of grime that stopped them cold. Scratched into the sandstone wall, at approximately chest height, were rows of vertical marks, grouped in fives. Someone, at some point in the castle's long history of imprisonment, had kept a careful count of the days.