Princess Kibi's designated tomb at Nashimoto, paired with Prince Nagaya's. The mid-Edo gazetteer Yamato-shi already calls the pair twin graves, and an 1893 survey recorded haniwa fragments on the mound.
Finds & research
Meiji records mention haniwa fragments and megaliths.
Official status & archaeological view
Official status
Managed by the IHA (designated 1901) as the tomb of Imperial Princess Kibi, daughter of Prince Kusakabe and Empress Genmei and principal consort of Prince Nagaya.
Attribution (jitei): the Imperial Household Agency's determination of whose tomb it manages — separate from heritage designation.
Archaeological view
The present round rise is about 20m across and 2m high and was designated with Prince Nagaya's tomb in 1901. Heguri Town cites Nobuchi Ryosen's 1893 survey recording many haniwa fragments on the mound, large stones buried in an L-shape and haniwa scattered on the summit, with three large stones drawn in the accompanying sketch.
Field notes
As this is IHA-managed land, worship from the oratory, about 150m northwest of Prince Nagaya's tomb. The twin graves still convey the tragedy.