One of Harima’s largest keyhole mounds, preserved in Mikunino, Himeji. A chest-shaped sarcophagus can be seen on the rear summit; a Tenman shrine stands on the front section.
Finds & research
A composite chest-shaped sarcophagus is visible on the rear summit, and the mound has paving stones and haniwa. Mirrors, blades, and beads came from Tomb 3 (Yamanokoshi Kofun), another mound within the same National Historic Site, not from the Danjozan mound itself.
Official status & archaeological view
Official status
National Historic Site "Danjozan Kofun and Tombs 1–3" (designated 1921).
Archaeological view
A keyhole mound about 143m long, built in the early 5th century. The 1921 designation text gave about 75 ken (roughly 136m). Himeji City describes a projection at the western waist and a moat with an outer belt. The sarcophagus is identified as Tatsuyama stone. The occupant is unconfirmed.
Field notes
North of JR Gochaku Station. The National Historic Site also includes Tombs 1 and 2 and Tomb 3 (Yamanokoshi Kofun). Follow on-site visitor guidance.