Before that, the rare antiquity was apparently laying in a castle moat at Mr. du Chatellier's family estate at the Chateau de Kernuz just 25 miles from where the slab was found. What's known as the the Saint-Bélec slab was originally unearthed from a Bronze Age grave mound in Finistère, Brittany. It comprised one of the walls of a cist, a type of stone box that housed the bodies of the deceased. The tablet was most likely carved before it was reused in the burrow toward the end of the early Bronze Age, and has now been reexamined and classified as the oldest cartographical representation of a known territory in Europe.