🇯🇵 Japan · Tumulus
Ushizuka Kofun
Early–Middle Kofun c.450 CE (Asuka preceding) · Kofun (Kinai–Kanto diffusion)
Kanto scallop hotategai-kofun 67 m (c.450 CE) — double moat and box cist on Mibu Plateau (per Ushivika).
🇯🇵 Japan · Tumulus
Makimuku Keyhole Kofun
Early Kofun 250–300 CE (transition Yayoi→Kofun) · Yayoi–Early Kofun — Makimuku/Yamato nucleus (Kinai)
Makimuku Keyhole Kofun — Makimuku Kofun cluster's keyhole trio at Miyama foothills 3 km south Sakurai, earliest keyhole zenpo-koen (late 3rd c CE) defining Yamato Kofun genesis before Hashihaka…
🇯🇵 Japan · Tumulus
Teraji
Kofun Middle–Late 400–600 CE (Kibi culture) · Kofun Kibi (Seto Inland-Kibi chiefdom)
Kibi keyhole tumulus (400–600 CE) at Teraji near Soja — 65 m yokoana corridor with Sue ware and Gaya bronze horse gear.
🇯🇵 Japan · Tumulus
Saki Tatanami Kofun Cluster
Kofun Middle 4th–6th c CE (Yamato middle) · Mid-Kofun Yamato — Saki royal cemetery north Heijo
Saki Tatanami Kofun Cluster — massive 4th–6th c CE Kofun cemetery (7 km long, 120+ mounds) at Saki–Tatanami hills 4 km north Heijo Palace, northern Nara basin edge, surveyed 1970s–90s by Nara…
🇯🇵 Japan · Tumulus
Iwakura (Fukuoka)
Kofun Middle–Late 350–550 CE (Northern Kyushu–Genkai) · Northern Kyushu Kofun (Genkai–Itoshima)
Genkai coast 55 m keyhole (350–550 CE) at Iwakura hill Fukuoka — corridor with Sue ware, iron armor and haniwa house model bridging Yayoi to Yamato.
🇯🇵 Japan · Tumulus
Ushivika Kofun Cluster
Yayoi late 3rd c → Kofun 4th–6th c CE · Yayoi–Kofun transition — Suo Bay Kitakyushu
Ushivika Kofun Cluster — late Yayoi to Kofun burial cluster (3rd–6th c CE, 11 mounds) on Suo Bay terrace at Kanda, north Kyushu, surveyed 1970s–90s.