Yakata Kofun Group: Painted Boats and Birds in the Foothills of Ukiha
On a low terrace at the foot of the Mino Mountains in Ukiha, Fukuoka Prefecture, four sixth-century burial mounds stand close together along a north-to-south line. Together they form the Yakata Kofun Group (Yakata Kofun-gun), a cluster of soshoku kofun, or decorated tumuli, whose stone burial chambers were painted with red and blue mineral pigments. The four mounds are Mezurashizuka, Haru, Torifunezuka, and Furuhata. Only Haru and Furuhata still keep recognizable earthen mounds; the other two survive mainly as fragments of their painted chambers.
A kofun is an ancient Japanese burial mound, built roughly between the third and seventh centuries for people of high rank. Most are plain earthworks. A smaller number, concentrated in northern Kyushu, carry paint or carving inside the chamber, and these are the decorated kofun that make the Ukiha area unusual. The motifs here are not abstract decoration alone. They show boats, birds, quivers, shields, human figures, and circular suns, arranged in ways that scholars read as a picture of the dead person's voyage into the next world.
From Quarry Discovery to National Recognition
The history of the site begins with an accident. In 1950, soil-quarrying work exposed the painted chamber of Mezurashizuka, the mound at the northern edge of the group. The find drew immediate attention, and on 31 March 1953 the property was placed under national protection as a Historic Site under the name "Mezurashizuka Tumulus, with Torifunezuka and Furuhata." Japanese law protects monuments of this kind under the category of Historic Sites, Places of Scenic Beauty, and Natural Monuments, and the designation criterion cited here covers shell middens, settlement remains, tumuli, and similar archaeological sites.
The name changed in 1986. On 25 February that year the Agency for Cultural Affairs renamed the protected property "Yakata Kofun Group: Mezurashizuka, Torifunezuka, Furuhata, Haru" and expanded the designated land to take in the fourth mound. Further additions of protected ground followed in 2003 and again in 2015. The four mounds had probably always belonged to a single cemetery on this terrace, and the renaming brought the official record in line with that understanding.
Four Mounds, Four Chambers
Mezurashizuka lies at the northern end, just south of the prefectural road. Its chamber had been broken open long before the 1950 discovery, and what remains is the rear wall and the lower courses of stone. The painting on that wall is the most complete in the group. Three quivers, each holding arrows, are set across the center; a large spiral motif resembling a curled bracken frond rises between two of them. Above and to the left float a concentric-circle sun and a gondola-shaped boat with a bird perched on its prow, steered by a figure wearing a cap who holds an oar. To the right stands a figure with a shield, and below it two toads. In Chinese tradition a toad was said to live on the moon, and the prevailing reading of the wall is that it shows the deceased leaving the bright world of the sun for the moon's darker realm, ferried by a boat that a bird guides between this life and the next.
Haru sits about 110 meters south, a round mound roughly 12.4 meters across and 3.5 meters high. Its single chamber opens to the west and runs about 8.9 meters deep. Red paint survives on the rear wall and part of a side wall, centered on a large vessel built in the semi-structural style of the period, with two long oars at the prow, figures aboard holding a bow and working an oar, and three quivers near the stern. The rear stone has an odd history: removed during quarrying and later put back the wrong way round, it now faces outward, so the painting that once looked into the chamber looks out of it.
Torifunezuka stands a further 135 meters south. The chamber is destroyed, leaving only two courses of the rear wall, but the surviving paint gives the mound its name, which means "bird-boat mound." A large boat carries figures, raises masts in two places for sails, and has a bird settled on both the prow and the stern. Around it are a shield, concentric circles, and two quivers.
Furuhata, about 200 meters south again, is the largest mound, around 20 meters across and 3 meters high, built in two stepped tiers that once carried a row of cylindrical haniwa clay cylinders. Its chamber opens to the southwest. On the upright mirror-stone of the rear wall, red paint forms concentric circles, triangle bands, and a human figure.
Why the Paintings Matter
Decorated kofun are rare, and the cluster in the middle Chikugo River basin is one of the densest in the country. What sets the Yakata group apart is the storytelling quality of the images. Rather than geometric pattern alone, the walls assemble a recurring cast of boats, birds, quivers, and suns into scenes that seem to narrate a passage between worlds. The painters worked with a limited palette, mostly red and blue, and let the yellow-brown surface of the granite act as a third tone, outlining figures in red and filling backgrounds in blue.
For visitors, the appeal is partly the painting and partly the chance to stand where so little usually survives. Pigment this old rarely lasts, and the fact that these walls were buried, then exposed, then sheltered is the reason the boats and birds can still be seen at all. The murals are kept inside protective facilities to control humidity and light, which is also why access is limited.
Visiting and Nearby Sites
The chambers are fragile, so they are not open on demand. Mezurashizuka and the other painted walls are shown to the public on a limited schedule, generally one Saturday a month, with reservations required several days in advance through the Ukiha city authorities and the Yoshii History and Folklore Museum. In autumn the museum often joins a regional event in which decorated kofun across several neighboring towns open on the same day. Anyone hoping to see the interiors should plan ahead and confirm the current schedule before traveling.
The wider area rewards a longer stay. A short distance away, in the grounds of Wakamiya Hachiman Shrine, stands Hinooka Kofun, a keyhole-shaped mound about 74 meters long from the early sixth century whose chamber holds some of the most colorful decoration in the prefecture, with concentric circles, triangles, bracken spirals, weapons, boats, horses, and beasts in red, white, and green. Hinooka belongs to the Wakamiya group of mounds and is one of Fukuoka's signature decorated tombs. Ukiha itself is known for its preserved white-walled merchant streets in the old Yoshii district, for terraced rice fields, and for orchards that draw fruit-pickers through much of the year. The nearest railway is Chikugo-Yoshii Station on the JR Kyudai Main Line, with the historic quarter and several of the mounds within walking or short driving distance.
- 📍 Plan Your Visit to Fukuoka
- Find tours, activities & transport passes near Yakata Tomb Group (Chinshikizuka Tomb / Torifunezuka Tomb /
- [ Dazaifu Tenmangu Shrine & Hakata Food Tours ]
Q&A
- What is a decorated kofun?
- It is an ancient burial mound whose stone chamber carries painted or carved decoration. Most Japanese kofun are unmarked inside; the painted ones are concentrated in northern Kyushu, and the Yakata group is one of the better-known examples.
- Can I go inside the mounds?
- Not freely. The painted walls are kept in protective facilities and shown on a limited monthly schedule by reservation. Contact the Ukiha city authorities or the Yoshii History and Folklore Museum and confirm the current opening days before you travel.
- What do the boat and bird paintings mean?
- The common interpretation is that they depict the dead person's journey to the afterlife, carried by a boat and guided by a bird, moving from the world of the sun toward the realm associated with the moon. This is a reading of the imagery rather than a written record.
- How old are the mounds?
- They date to the late Kofun period, in the sixth century. The decorated kofun tradition in this region flourished at that time.
- What else is worth seeing nearby?
- Hinooka Kofun at Wakamiya Hachiman Shrine, another decorated tomb with unusually vivid wall painting, and the preserved white-walled streets of the old Yoshii district. The surrounding countryside is known for orchards and terraced rice fields.
Basic Information
| Name | Yakata Kofun Group (Mezurashizuka, Torifunezuka, Furuhata, Haru) |
|---|---|
| Location | Tominaga, Yoshii-cho, Ukiha City, Fukuoka Prefecture |
| Designation | National Historic Site (Historic Sites, Places of Scenic Beauty, and Natural Monuments) |
| Designated | 31 March 1953; renamed and expanded 25 February 1986; further additions in 2003 and 2015 |
| Period | Late Kofun period (sixth century) |
| Composition | Four round mounds, three with painted chambers; mounds surviving at Haru and Furuhata |
| Managing body | Ukiha City |
| Access | Reachable from Chikugo-Yoshii Station on the JR Kyudai Main Line; interiors open by reservation on a limited schedule |
References
- National Database of Designated Cultural Properties, Agency for Cultural Affairs (Yakata Kofun Group)
- https://kunishitei.bunka.go.jp/bsys/maindetails/401/2643
- Cultural Heritage Online (Yakata Kofun Group)
- https://bunka.nii.ac.jp/heritages/detail/139717
- Ukiha City, Yakata Kofun Group (Mezurashizuka, Haru, Torifunezuka, Furuhata)
- https://www.city.ukiha.fukuoka.jp/kiji0035103/index.html
- Ukiha Tourism Site, Mezurashizuka Kofun
- https://ukihalove.jp/contents/medurashidukakofun/
Last verified: 2026.05.28