The largest keyhole mound in Heguri, Nara, designated a National Historic Site and preserving a megalithic chamber and house-shaped sarcophagus.
Finds & research
A corridor-style chamber, assembled house-shaped sarcophagus, gilt-bronze horse gear, weapons, ornaments, and Sue ware.
Two views on the occupant
Archaeological view
A 60.5m keyhole mound (1969 excavation measurement; the Agency for Cultural Affairs designation description states ~65m, likely a different measurement baseline), with a rear circle about 35m across and 8m high and a front about 31m wide. Built in the mid-to-late 6th century, it has a megalithic corridor chamber and assembled house-shaped sarcophagus.
Imperial Household Agency view
Not designated by the IHA; a National Historic Site. The occupant is unknown.
Field notes
About 10 minutes on foot from Kintetsu Tatsutagawa Station. The chamber is kept locked; check Heguri Town's current guidance for access.