
Overview
Suyama Kofun is a large keyhole-shaped burial mound in the Miyoshi district of Kōryō, Nara Prefecture. It stands as the central tumulus of the Umami Kofun cluster spread across the western edge of the Nara Basin, and is believed to have been built between the end of the 4th and the beginning of the 5th century. Ranking among the largest tombs in all of Japan, it is designated a national Special Historic Site, its moated mound conveying the power and engineering skill of the Kofun period.
Highlights
- ●A commanding keyhole mound ranking among Japan's largest tombs
- ●The tranquil waterside scenery created by the encircling moat
- ●Special Historic Site status symbolizing the central Umami cluster
- ●Middle Kofun burial culture embodied in the vertical stone chamber
History
Constructed in the middle Kofun period, the mound is thought to be the grave of a powerful clan leader who dominated the Umami region. It was designated a National Historic Site of Japan in 1927, and in 1952 its exceptional value earned it elevation to Special Historic Site status. Excavations of the surrounding moat have uncovered wooden structures and burial-related artifacts, offering rare clues to ancient funerary rites. Its vertical stone burial chamber marks it as a tomb of great-chieftain rank for its era.
Access
The site lies near latitude 34.55 and longitude 135.74 in Miyoshi, Kōryō. It sits within the scatter of tumuli around the Umami Hills, so it pairs naturally with a stroll through the surrounding parkland. Because access routes and the extent open to visitors vary by season, please confirm the latest details through official Kōryō information before your visit.
Best season
Spring and early summer, when the Umami Hills turn lush green, and autumn, when the clear air sharpens the mound's outline, are especially rewarding. Seek shade in summer, while winter's bare branches make the tomb's shape easier to trace.
Map
34.5564, 135.7408 · Wikidata
Suggested itinerary
- 1Start at the Umami Hills park to grasp the layout of the cluster
- 2Walk along Suyama Kofun's moat to view the mound as a whole
- 3Take time to observe the keyhole shape and its vast scale
- 4Explore other historic sites of Kōryō to feel the Kofun era's reach
Did you know?
💡 Suyama Kofun is counted as the 23rd largest ancient tomb in Japan, a commanding presence even among the many mounds of the Umami cluster. The silhouette of the mound mirrored on its moat is a favorite subject for photographers.
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