Holland

During exploratory excavations connected to a renovation project in the Dutch city of Alkmaar, archaeologists unearthed a centuries - old, tiled floor that was partially constructed from some unusual building materials. Bizarrely enough, various gaps between the tiles had been filled in with patches made from sawed cow bones, for reasons that are completely undetermined at this time. The excavations that produced this remarkable discovery took place in the red-light district of central Alkmaar, a city of just over 100,000 people located in the Netherlands province of North Holland . The building being renovated was constructed in 1609 , meaning the cow-bone floor must be 300 years old at the minimum. Ho wever, there is reason to believe the structure