01 / Joyama Yokoana Tombs (城山横穴群)
Traces of color at the entrancewere analyzed as red bengara.
A national Historic Site of hillside tombs in Kanada. The Agency for Cultural Affairs gives the start of construction as the first half of the 6th century, the earliest stage among tombs of this type in the Onga River basin. The town records that traces of color at the entrance were found by analysis to be bengara.
- National Historic Site (October 6, 2014)
- 222 tombs confirmed (surveys FY2008-2013)
- Red pigment is bengara (analysis by the Kyushu Historical Museum)
