SHIBUKAWA, JAPAN—Skeletal remains clad in armor dating to the early sixth century A.D. have been uncovered from a layer of volcanic ash at Japan’s Kanai Higashiura ruins. The man probably died during the eruption of a nearby volcano. His armor had been fashioned from small overlapping metal plates, which were manufactured to the southeast. Such imported armor has been found in the tombs of high-ranking people, but this is the first time it has ever been found on its owner as it was worn.