🇯🇵 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 · Ancient village
Mizuko Shell Midden
Jomon 6000–1800 BCE (Early to Final) stratified · Jomon (Kanto)
132 m Kanto Jomon shell midden — 5× stratified with 35 pit houses on Musashino (Mizuko, 6000–1800 BCE).