The Miyake of Ancient Tsukushi: Tracing the Forgotten Landscape of Northern Kyushu

Written By Misako Matsukura

A Different Map of Ancient Kyushu

Northern Kyushu offers a fascinating way to experience Japan beyond its better-known historical sites.

Across places such as Shime, Kasunoya, Yame, Iizuka, and Aka Village, traces of an ancient political landscape remain connected by a single word: Miyake.

In the Nihon Shoki, Miyake refers to territories placed under the direct control of the Yamato court. These sites were not necessarily limited to rice production. According to Shime Town, Miyake could also include facilities connected with ports, iron production, and military functions.

For travelers interested in the deeper history of Japan, the story of the Miyake offers a different map of northern Kyushu—one that reveals how political power, agriculture, transportation, and regional communities were connected more than 1,400 years ago.

Iwai, kudzuko and the Kasunoya Miyake

The story begins with Tsukushi no Kimi Iwai, a powerful figure in northern Kyushu during the sixth century.

According to Yame City, the conflict known traditionally as the “Iwai Rebellion” is increasingly described in recent research as the “Battle of Tsukushi no Kimi Iwai.” Rather than simply viewing it as a rebellion against the Yamato court, some modern interpretations see it as a war that occurred during the wider process through which ancient Japan was becoming politically unified.

The conflict began in 527. The following year, Iwai fought the Yamato army led by Mononobe no Arakahi at Mii, in what is now the Kurume area. The Yamato side ultimately prevailed.

After the defeat, Iwai's son kudzuko faced the possibility of punishment. According to the Nihon Shoki, he offered the Kasunoya Miyake to the Yamato court and thereby escaped the death penalty. Both Yame City and Shime Town highlight this episode.

It is a brief episode in the ancient chronicles, but it opens a remarkable window onto the political geography of northern Kyushu.

What Was the Kasunoya Miyake?

The value of the Kasunoya Miyake seems to have been considerable.

Shime Town explains that Miyake, which developed from the sixth century onward, functioned as territory directly controlled by the Yamato court. Its functions could extend beyond agricultural production to include ports, iron production, and military bases.

The same source describes the Kasunoya Miyake as an important starting point for the establishment of other Miyake in locations including Honami. It also notes the later placement of the Natsu no Miyake, or government facility, for administering these territories.

This gives the word “Miyake” a much broader meaning than simply a storehouse or farming estate. It suggests a network through which the central authority could manage strategically important areas.

Yet there is an intriguing problem.

Where exactly was the Kasunoya Miyake?

The answer remains uncertain.

Shime Town identifies several possibilities. The Tabuchi Site in Koga, where large buildings from the later Kofun period have been excavated, has been proposed as one possibility. Areas around Himamori and Ae in Kasuyoya Town have also been suggested because of their agricultural productivity and strategic transportation location. The Tsurumizuka Kofun has even been associated in local tradition with kudzuko.

But the official source is careful to state that none of these candidates has been conclusively proven to be the Kasunoya Miyake.

For the modern traveler, this uncertainty is part of the fascination.

A Landscape That Reaches Beyond Kasunoya

The story of the Kasunoya Miyake also tells us something about the extent of Tsukushi power before the conflict.

Yame City notes that the fact kudzuko was able to offer the Kasunoya Miyake indicates that the influence of the Tsukushi no Kimi extended as far as the area around today's Kasunoya District and Fukuoka City before the war.

Seen from this perspective, northern Kyushu was not simply a peripheral region.

It was a landscape in which powerful local communities, the Yamato court, and the wider world across the sea were closely connected.

The exact boundaries of those political territories remain difficult to reconstruct, but the names preserved in the historical records provide clues to a much more complex ancient geography.

The Akano Miyake | A Clue in Modern Aka Village

Further east, another ancient name offers an intriguing connection with the modern landscape.

Aka Village's official tourism site explains that the place-name “Aka” appears in the Nihon Shoki in connection with an Akano Miyake (我鹿屯倉) established in the second year of Emperor Ankan, traditionally dated to 535.

The site states that the present-day Aka Village is considered a possible location of this Akano Miyake.

The connection is presented as a hypothesis rather than an archaeological certainty.

Aka Village also preserves the traditional story of an ancient place called Akano, associated with Mount Ganjaku, today known as Iwashi-yama. According to the village's official account, the ancient name “Aga” survives in the historical record and is connected with the name of the modern village.

For visitors, this creates an unusual opportunity: a journey through a landscape where an ancient name, a historical record, and a modern community can still be considered together.

From Iwai to the Miyake Network

The stories of Kasunoya and Akano become particularly interesting when viewed together.

One lies toward the northern part of present-day Fukuoka Prefecture, close to the sea and major routes. The other lies farther inland in what is now Tagawa District.

Between them stretches a landscape that includes agricultural plains, mountain valleys, transportation routes, and communities that have continued to develop for centuries.

The official sources do not provide enough evidence to reconstruct a precise route connecting every Miyake mentioned in the ancient records. Nor can every modern place be confidently identified with an ancient Miyake.

But the surviving names suggest something important: the ancient political landscape of northern Kyushu was considerably more interconnected than a modern map might suggest.

Iwai's Legacy and a Different View of Ancient Japan

The story also invites us to reconsider how ancient conflicts are remembered.

Yame City explains that the traditional historical narrative portrays Iwai as someone who opposed the Yamato court. At the same time, recent research has proposed viewing the conflict in the broader context of state formation, rather than simply as a rebellion.

The enormous Iwatoyama Kofun in Yame provides another perspective.

Yame City notes that constructing such a large burial mound would have required the cooperation of many people. From this perspective, Iwai can also be viewed as a regional leader who commanded substantial support.

The result is not a single definitive interpretation, but a more layered historical landscape.

The chronicles, archaeological remains, local traditions, and modern research each offer a different perspective.

A Different Way to Experience Northern Kyushu

For travelers accustomed to visiting Japan through its famous temples, castles, and historic towns, the Miyake landscape offers something different.

Instead of following a single monument, imagine following a historical question.

Where was the Kasunoya Miyake?

What did the name Akano mean?

How far did the influence of the Tsukushi no Kimi extend?

And how did the political landscape of northern Kyushu change during the sixth century?

These questions lead beyond the most familiar tourist routes, toward places such as Shime, Kasunoya, Yame, and Aka Village.

Here, history is not always presented as a completed story.

Sometimes, it survives as a place-name, a mound, a local tradition, or a carefully worded hypothesis.

When the Ancient Map Emerges Again

The Miyake of ancient Tsukushi cannot be reconstructed with absolute certainty.

The precise location of the Kasunoya Miyake remains unresolved. The identification of the Akano Miyake with present-day Aka Village is presented as a hypothesis. And the interpretation of the conflict involving Tsukushi no Kimi Iwai continues to develop through historical research.

Yet these uncertainties do not make the landscape less meaningful.

They make it possible to experience northern Kyushu as an unfolding historical investigation.

From the story of Iwai and kudzuko to the mysterious Kasunoya Miyake, from the ancient name of Akano to the landscapes of modern Aka Village, the old political geography of Kyushu gradually comes back into view.

For travelers seeking a quieter and more intellectually rewarding side of Japan, this may be the most compelling way to explore ancient northern Kyushu: not simply by looking for monuments, but by walking through the landscapes where the ancient map may still be hidden beneath the modern one.

References

Misako Matsukura
Next

The Harajo Virgin Mary: A Monumental Prayer for Peace