A National Historic Site whose huge chamber stands exposed in a residential area. The Agency for Cultural Affairs' designation account calls it important for understanding the Hata clan and others said to have flourished in Yamashiro; the occupant is not established.
Finds & research
The double-sleeved horizontal stone chamber survives. Kyoto City's guidance does not give the attribution or details of older finds.
Official status & archaeological view
Official status
The area containing its huge chamber is a National Historic Site managed by Kyoto City.
Archaeological view
A keyhole mound at Uzumasa Omokage-cho, Ukyo-ku, Kyoto, reconstructed at about 75m long. Built around the 7th century, its mound is largely gone, leaving a 17.8m double-sleeved horizontal stone chamber—the largest in Kyoto Prefecture.
Field notes
Advance application to Kyoto City’s Cultural Properties Protection Section is required. Check current conditions and do not enter the chamber without permission.