is an

archaeological site An archaeological site is a place (or group of physical sites) in which evidence of past activity is preserved (either prehistoric or recorded history, historic or contemporary), and which has been, or may be, investigated using the discipline ...

with the traces of a

Yayoi period The Yayoi period (弥生時代, ''Yayoi jidai'') (c. 300 BC – 300 AD) is one of the major historical periods of the Japanese archipelago. It is generally defined as the era between the beginning of food production in Japan and the emergence o ...

settlement, located in the Izumi neighborhood of

Kita-ku, Okayama is one of four Wards of Japan, wards of Okayama, Okayama Prefecture, Japan. The ward has an area of 451.03 km2 and a population of 295,312. The population density is 655 per square kilometer. The name means "North Ward." The wards of Okay ...

Okayama Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,826,059 (1 February 2025) and has a geographic area of 7,114 Square kilometre, km2 (2,746 sq mi). Okayama Prefecture ...

, in the

San'yō region The San'yō Region (山陽地方 ''San'yō-chihō'') is an area in the south of Honshū, the main island of Japan. It consists of the southern part of the Chūgoku region, facing the Seto Inland Sea. The name ''San'yō'' means "southern, sunny ( ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

. It was designated a National Historic Site of Japan in 1971, with the area under protection expanded in 2002.

Overview

The Tsushima Site is located on a portion of the Okayama Prefectural Multipurpose Grounds, the site of a former

Imperial Japanese Army The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...

parade ground A parade is a procession of people, usually organized along a street, often in costume, and often accompanied by marching bands, floats, or sometimes large balloons. Parades are held for a wide range of reasons, but are usually some variety ...

which was developed in 1962 with a multi-purpose athletic stadium, gymnasium, swimming pools, baseball fields, museum and other public facilities.

Archaeological excavation In archaeology, excavation is the exposure, processing and recording of archaeological remains. An excavation site or "dig" is the area being studied. These locations range from one to several areas at a time during a project and can be condu ...

s from 1968 uncovered relics and remains from the Yayoi period through the

Kofun period The is an era in the history of Japan from about 300 to 538 AD (the date of the introduction of Buddhism), following the Yayoi period. The Kofun and the subsequent Asuka periods are sometimes collectively called the Yamato period. This period is ...

Nara period The of the history of Japan covers the years from 710 to 794. Empress Genmei established the capital of Heijō-kyō (present-day Nara). Except for a five-year period (740–745), when the capital was briefly moved again, it remained the capita ...

Heian period The is the last division of classical Japanese history, running from 794 to 1185. It followed the Nara period, beginning when the 50th emperor, Emperor Kammu, moved the capital of Japan to Heian-kyō (modern Kyoto). means in Japanese. It is a ...

, and the end of the

Kamakura period The is a period of History of Japan, Japanese history that marks the governance by the Kamakura shogunate, officially established in 1192 in Kamakura, Kanagawa, Kamakura by the first ''shōgun'' Minamoto no Yoritomo after the conclusion of the G ...

. Of the greatest academic interest was a water channel for paddy fields from the early Yayoi period and a rectangular building site contained the traces of circular

pit dwelling A pit-house (or pit house, pithouse) is a house built in the ground and used for shelter. Besides providing shelter from the most extreme of weather conditions, this type of earth shelter may also be used to store food (just like a pantry, a lar ...

s and raised pillar warehouse from the early Yayoi period. This was the first time in Japan that a village and paddy field from the early Yayoi period had been discovered. The settlement was on a slight highland formed in the delta area of the

Asahi River The Asahi River is a river in Okayama Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,826,059 (1 February 2025) and has a geographic area of 7,114 Squa ...

, with the paddy fields in a very narrow swampy area of 3 to 5 acres. The presence of rice pollen, seeds and leaves of various paddy weeds also proved that the paddy soil itself remained in situ. The boundary between the paddy field and the swamp itself was demarcated by a row of piles, and the boundary with the slightly elevated land was demarcated by a row of planks, but no fortification of the settlement was found. Later investigation found that more paddy fields of the early Yayoi period demarcated by ridges were scattered over a wide area. A large number of wooden artifacts and shards of

Yayoi pottery Yayoi pottery (弥生土器 Yayoi doki) is earthenware pottery produced during the Yayoi period, an Iron Age era in the history of Japan traditionally dated 300 BC to AD 300. The pottery allowed for the identification of the Yayoi period and ...

were also found. The site is now an

archaeological park An archaeological site is a place (or group of physical sites) in which evidence of past activity is preserved (either prehistoric or historic or contemporary), and which has been, or may be, investigated using the discipline of archaeology and ...

with reconstructions of pit dwellings and raised-floor warehouses, and paddy fields. The items excavated are on display at the at site, which is located about 20 minutes on foot from

JR West , also referred to as , is one of the Japan Railways Group (JR Group) companies and operates in western Honshu. It has its headquarters in Kita-ku, Osaka. It is listed in the Tokyo Stock Exchange, is a constituent of the TOPIX Large70 index, ...

Okayama Station is a major railway station in Kita-ku, Okayama, Okayama Prefecture, Japan. The station is operated by West Japan Railway Company (JR West). Lines Okayama Station is one of the major intersections of railways in the Chūgoku region. All trai ...

References

{{reflist

External links

Okayama Prefectural Multi-purpose Grounds official home page
History of Okayama Prefecture Okayama Historic Sites of Japan Archaeological sites in Japan Yayoi period

Overview

See also

References

External links