Jomon Prehistoric Sites in Northern Japan

The Jomon people of northern Japan made pottery approximately 14,000 years ago, which places their ceramics among the oldest fired clay vessels anywhere on Earth. They were hunter-gatherers who did not farm rice and never became agriculturalists. That combination is what makes them archaeologically significant and, to most visitors, genuinely surprising: a society that maintained complex, settled communities with large buildings, stone circles, and long-distance trade networks for over ten thousand years without agriculture. The conventional expectation that settled life requires farming does not hold at Sannai-Maruyama or the Oyu Stone Circles. The Jomon are the primary evidence against it.

UNESCO inscribed seventeen Jomon sites in Hokkaido and northern Honshu as a World Heritage serial property in 2021. The sites span the period from roughly 13,000 BCE to 400 BCE and document the emergence, development, and eventual decline of one of the longest-lasting hunter-gatherer cultures the archaeological record contains. The word “Jomon” translates as cord-marked, a name given by nineteenth-century scholars to describe the rope-pattern impressions pressed into the culture’s pottery surfaces.

Why These Sites Specifically

The seventeen sites were selected to represent different phases of Jomon culture and different types of activity: settlements, ceremonial sites, burial grounds, and seasonal camps. No single site covers the whole story. Visiting the most significant ones in combination gives a more complete picture than any individual site can provide.

The concentration in northern Japan, specifically Aomori, Akita, Iwate, and Hokkaido, reflects partly where excavation has been most extensive and partly where conditions for organic preservation are somewhat better than in warmer regions. It does not mean the Jomon only lived in northern Honshu; their range extended throughout the archipelago.

Sannai-Maruyama (Aomori)

The largest and most visited of the seventeen sites, Sannai-Maruyama in Aomori City, was continuously occupied for approximately two thousand years from around 3900 to 2200 BCE. Excavations revealed the foundations of very large pillar-supported buildings, some requiring timber columns more than a metre in diameter, alongside hundreds of pit dwellings, storage pits, and a substantial dump of artefacts that has yielded over 700,000 individual finds.

The site is about ten minutes by car from Shin-Aomori Station on the Tohoku Shinkansen, or 30 minutes from Aomori Airport. The Sannai Maruyama Jomon Culture Centre holds a permanent exhibition of around 1,700 artefacts, including roughly 500 items designated as important cultural properties. Volunteer guides are available at set times and provide considerably more context than the English-language panels alone. Entry to the outdoor site is free; the museum has a modest admission fee. Opening hours are 9:00 to 17:00 most of the year, with extended hours to 18:00 in summer (last admission one hour before closing). The site is closed on the fourth Monday of each month and from December 30 through January 1.

The reconstructed large-pillar building on the grounds is a genuine surprise. Most visitors arrive expecting something modest and find instead a structure of real scale and ambition. That adjustment of expectations is part of what makes Sannai-Maruyama worth the journey.

Oyu Stone Circles (Akita)

The Oyu Stone Circles in Akita Prefecture are two concentrically arranged stone formations dating to approximately 2000 BCE. Unlike stone circles in Europe, these incorporate a distinctive feature: aligned sunstones that appear positioned to mark solar events. Whether they served as calendrical tools, ceremonial spaces, or both is still debated, but the scale and precision of construction are clear. Each circle is flanked by radiating stone arms that point roughly toward the midsummer sunset.

Akita is reachable by Akita Shinkansen from Tokyo in about three and a half hours. The stone circles are about 30 kilometres from Kazuno, the nearest city. A car is essentially required to reach the site from the station; rental options are available in Kazuno.

Hokkaido Sites

Six of the seventeen sites are in Hokkaido. The Kiusu Earthwork Burial Circles, Kitakogane Shell Mound, Irie and Takasago sites are the most substantial and are most conveniently reached via New Chitose Airport near Sapporo. The Hakodate area sites, including the Ofuna settlement which demonstrates pit dwellings, storage holes, and burial features, are accessible from Hakodate Airport or Hakodate Station on the Hokkaido Shinkansen.

For visitors already planning time in Hokkaido, combining a day at the southern Hokkaido Jomon sites with the broader itinerary adds relatively little travel time and gives the UNESCO serial property a physical breadth that no single site alone provides.

The Pottery Question

Jomon pottery is worth examining carefully if you have access to a museum collection. The earliest examples, dating to around 14,000 BCE, are simple low-fired vessels with pointed bottoms likely used for cooking shellfish or plant foods over fire. By the Middle Jomon period, around 3000 to 2000 BCE, the pottery has become extraordinarily elaborate: flame-style ceramics with complex upswept rims and surface modelling that serve no obvious utilitarian purpose. The Niigata and Nagano prefectural museums hold some of the finest examples. No one fully understands why a hunter-gatherer society invested so much craft effort in ceramic decoration that appears primarily aesthetic.

That unresolved question is a reasonable summary of the Jomon period generally. They were doing things that do not fit the standard archaeological categories, and the sites in northern Japan are where that argument is most legible to a visiting non-specialist.

Practical Notes

The sites are geographically spread across four prefectures and two major islands. A realistic visit to the best of them takes at least three to four days, with Aomori as the natural base for Sannai-Maruyama and the northern Honshu sites, and either Sapporo or Hakodate as the base for the Hokkaido sites.

The Tohoku Shinkansen reaches Shin-Aomori in about three hours from Tokyo. The Hokkaido Shinkansen extension connects Shin-Aomori to Hakodate in under an hour. A JR Pass covering these lines makes the logistics manageable. For the Akita stone circles and some of the more remote Hokkaido sites, a rental car is the practical requirement.

Most site museums have English-language materials but limited English-speaking staff. The official Jomon Japan website publishes access information and maps in English and is the most reliable source for current hours and admission fees before you travel.