Below the Surface, a website created by the Department of Archaeology; Monuments and Archaeology (MenA), the City of Amsterdam; and their Chief Technology Officer, documents and organizes 19,000 of the nearly 700,000 objects found along the bottom of the Amstel River when it had to be pumped dry during the early 2000s construction of the nearby metro. Some of the objects are from as early as the 14th Century and include wooden dice, engraved belt buckles and lots and lost of pipes.
