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Gunma Historic site

Hōtōzan Kofun

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宝塔山古墳

Explore a unique 7th-century square burial mound with a rare house-shaped sarcophagus.

Hōtōzan Kofun
Saigen Jiro CC0 resized via Wikimedia Commons

What it is

  • A square-shaped kofun, an ancient burial mound.
  • Part of the larger Sōja Kofun group.
  • Designated a National Historic Site.
  • Dates to the mid-7th century.

What to see

  • A mound 66 meters on each side, 12 meters high.
  • Three distinct construction stages of the mound.
  • A wide moat, 18 meters across, surrounding the mound.
  • A double-chambered horizontal stone burial chamber.
  • A rare house-shaped sarcophagus inside the chamber.
  • The Akimoto clan cemetery on top of the mound.

Notes written by Japan Gems from facts in Japanese Wikipedia.

Where it is

Hōtōzan Kofun Open in Google Maps

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