It must have been terrible for the Viking craftsman. He lost all his equipment while he traveled across the lake Mästermyr on the island of Gotland. In 1936 the wooden chest containing all the tools were found at the bottom of the former lake, which now had turned into a bog. There are axes, hammers, tongs, punches, plate shears, saw blades, files, rasps, drills, chisels, knives, awls and whetstones among the 200 objects that were found in the chest. There are also raw material and scrap…