A rare "square pair" on the Yura floodplain at Tada, Ayabe — the distinct funerary choice of Tanba lords who built no keyhole mounds.
Finds & research
Hijirizuka: mirror, helmet, and cuirass fragments, an iron spear, iron swords (dozens of fragments), iron arrowheads, a comma-bead, glass beads. Both: cylindrical and morning-glory haniwa.
Two views on the occupant
Archaeological view
Two square mounds with projections about 120m apart. Hijirizuka is about 54m per side (59m including its projection) and 7m high; Ayamezuka is about 32m per side. Both are two-tiered, moated, and date to the early 5th century. Because this entry covers both mounds, Hijirizuka's 54m dimension is not displayed as a single overall length.
Imperial Household Agency view
Not designated by the IHA. National Historic Site (1992; both mounds).
Field notes
Compare the two across their moats; combine with Kisaichi-Maruyama (id:685) on an Ayabe circuit.