The Futagoyama keyhole-shaped burial mound in Gyoda, Saitama Prefecture, Japan
Image credit Hiroshi Kawai
 
Takuya Kawasaki, correspondent on the Asahai Shimbun, reports that –
 
Work is under way to drain water and reclaim a moat that protects an ancient burial mound in this city north of Tokyo. The Futagoyama mound is believed to date from the early sixth century. With a budget of 50 million yen ($500,000), the project is set to be completed by the end of fiscal 2014.
 
Serious erosion has occurred along the outer edge of the mound. The keyhole-shaped earthworks, 138 meters long, belongs to the Sakitama burial mound cluster. Many large ancient burial mounds in Japan are surrounded by moats.
 
Full article here.