Yoshinogari: Japan's Great Moated Village of the Yayoi Period

Yoshinogari is the site of a great fortified village of the Yayoi period in Saga Prefecture, on the southern Japanese island of Kyushu. Occupied from around the 3rd century BC to the 3rd century AD, it grew into a settlement ringed by deep moats and wooden palisades, with watchtowers, inner enclosures for an elite and long rows of jar burials. Its excavation from 1986 offered the clearest picture yet of how rice farming, warfare and social ranking changed early Japan.

Rice farming arrives in Japan

For more than ten thousand years before Yoshinogari, the islands of Japan were home to the hunter-gatherers and fishers of the Jōmon culture. Some Jōmon communities, like the one at Sannai-Maruyama, lived in large permanent villages, but they did not depend on farming.

That changed when wet-rice cultivation crossed from the Korean Peninsula to northern Kyushu. The new way of life, together with new pottery styles, bronze and iron tools and woven textiles, defines the Yayoi period, named after a district of Tokyo where its pottery was first identified in 1884. The traditional dates for the Yayoi are about 300 BC to AD 300, but radiocarbon dating since the early 2000s suggests that rice paddies appeared in northern Kyushu several centuries earlier, perhaps as early as the 10th to 8th centuries BC. Historians still debate the exact start.

Northern Kyushu was the gateway for these changes. It lay closest to Korea and to the Han dynasty commanderies established on the peninsula after the Han conquest of Gojoseon in 108 BC, which brought Chinese goods and ideas within reach of local leaders.

A village on the hills

Yoshinogari lies on a long, low ridge above the fertile Saga Plain, near the modern towns of Yoshinogari and Kanzaki. The earliest Yayoi occupation was a modest farming village. During the Middle Yayoi period a ditch was dug around part of the settlement, and the community grew steadily.

In the Late Yayoi period, roughly the 1st to 3rd centuries AD, Yoshinogari reached its peak. A V-shaped outer moat, several metres deep, enclosed an area estimated at around 40 hectares. Earth ramparts and wooden fences ran along its edges. Inside were two separately moated inner enclosures: a northern one with a very large raised-floor building, interpreted as a ceremonial or ritual hall, and a southern one that probably housed the ruling households.

At points along the inner moats stood tall timber structures, identified as watchtowers from the arrangement of their postholes. To the west lay a cluster of raised-floor storehouses, perhaps a market or a store for rice and other goods controlled by the leadership. Ordinary families lived in pit dwellings, sunken houses with thatched roofs, scattered across the hill.

Jar burials and the Northern Mound

Like other communities in northern Kyushu, the people of Yoshinogari buried many of their dead in large pottery jars. Usually two jars were placed mouth to mouth to form a coffin and laid in a pit. Thousands of these jar burials have been found at the site, often in long rows stretching for hundreds of metres; counts of more than 2,000 are commonly cited.

Some of the remains tell of violence. Archaeologists have found skeletons with wounds from weapons, bones with arrowheads still embedded in them and at least one body buried without its head. Together with the moats and palisades, this evidence suggests that conflict between neighbouring communities was a real part of Yayoi life.

At the northern end of the settlement stood a large burial mound, known as the Northern Mound, built of carefully layered earth. It measured about 40 metres long and over 25 metres wide. It held around fourteen jar coffins, several of them with bronze daggers, and one with dozens of blue glass tubular beads. Because of its size and grave goods, the mound is usually interpreted as the burial place of successive generations of local rulers.

What Yoshinogari reveals

Yoshinogari shows a society that was becoming more unequal and more organised. A small elite lived apart behind inner moats, were buried in a monumental mound with imported or prestige goods, and seem to have controlled storehouses and ritual spaces. Most people lived in simpler houses and were buried in ordinary jar cemeteries.

The finds also show wide contacts. Bronze weapons and mirrors, glass beads and fragments of silk point to links with the Korean Peninsula and, indirectly, with Han China. Some bronze objects were cast locally, as moulds found in the region show, which means that metalworking skills had been adopted on Kyushu itself.

The layout of the site, with walls, watchtowers and an enclosed palace area, matches the general picture of the islands of Wa given in Chinese histories of the 3rd century AD. Those texts describe many small competing polities, periods of war and the rise of rulers who controlled ritual as well as politics.

Myths and facts

Myth: Yoshinogari was Yamatai, the kingdom of Queen Himiko. When the site was publicised in 1989 it caused a sensation in Japan, partly because its features recalled the description of Queen Himiko of Yamatai in the Chinese “Account of the Wa”. There is, however, no inscription or other direct proof. The location of Yamatai remains disputed between northern Kyushu and the Nara Basin, and most archaeologists see Yoshinogari as an example of the kind of centre the text describes, not as Yamatai itself.

Myth: the buildings at the park are original. Only postholes, ditches, pits and burials survive in the ground. The halls, towers and fences seen today are modern reconstructions based on the excavated plans and on comparisons with other sites and with images on Yayoi pottery and bronze bells.

Abandonment and rediscovery

Towards the end of the Yayoi period, as the Kofun period of large keyhole-shaped tombs began in the 3rd century AD, Yoshinogari declined. The great moats were allowed to fill and the settlement lost its central role, although the area was later reused for burials and other activities.

The site was rediscovered in 1986, when excavations were carried out ahead of a planned industrial park. The scale of the finds led to the cancellation of the development. Yoshinogari was declared a national Historic Site in 1990 and a Special Historic Site in 1991. Yoshinogari Historical Park opened in 2001, and excavation and study have continued since.

Timeline

• c. 10th–3rd century BC: Wet-rice farming spreads from the Korean Peninsula to northern Kyushu; dates are debated.
• c. 3rd century BC: A Yayoi farming village is established on the Yoshinogari hills.
• c. 2nd–1st century BC: The settlement grows; a ditch is dug and the Northern Mound is used for elite burials.
• c. 1st–3rd century AD: Late Yayoi peak, with a large outer moat, inner enclosures and watchtowers.
• c. late 3rd century AD: The moats fill in and the settlement declines at the start of the Kofun period.
• 1986: Excavation begins ahead of a planned industrial park.
• 1989: Results are announced and draw national attention.
• 1991: Yoshinogari is designated a Special Historic Site of Japan.
• 2001: Yoshinogari Historical Park opens to the public.

Why it matters

Yoshinogari is the most complete picture of a Yayoi chiefdom yet uncovered. It shows how rice farming brought larger villages, stored wealth, social ranks and organised warfare to Japan, laying the ground for the regional powers of the Kofun period and, eventually, the early Japanese state.