was an ancient castle (also known as a located in the city of Sakaide,

Kagawa may refer to: * , the smallest prefecture of Japan by area, located on the island of Shikoku * , a district in Kagawa Prefecture * , a town located in Kagawa District * , train station in Chigasaki, Kanagawa Prefecture * Kagawa (surname) Kagawa (w ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

, and extending partly into the neighboring city of

Marugame is a city located in Kagawa Prefecture, Japan. , the city had an estimated population of 108,541 in 46101 households and a population density of 970 persons per km². The total area of the city is . Geography Marugame is located in north-ce ...

. Its ruins have been protected as a National Historic Site since 1951.It is also known as Shiroyama Castle or Sanuki-Shiroyama Castle.

History

After the defeat of the combined

Baekje Baekje or Paekche (, ) was a Korean kingdom located in southwestern Korea from 18 BC to 660 AD. It was one of the Three Kingdoms of Korea, together with Goguryeo and Silla. Baekje was founded by Onjo, the third son of Goguryeo's founder Jum ...

and Yamato Japan forces, at the hands of the

Silla Silla or Shilla (57 BCE – 935 CE) ( , Old Korean: Syera, Old Japanese: Siraki2) was a Korean kingdom located on the southern and central parts of the Korean Peninsula. Silla, along with Baekje and Goguryeo, formed the Three Kingdoms of K ...

and

Tang China The Tang dynasty (, ; zh, t= ), or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907 AD, with an interregnum between 690 and 705. It was preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdom ...

alliance at the

Battle of Hakusukinoe The Battle of Baekgang or Battle of Baekgang-gu, also known as Battle of Hakusukinoe ( ja, 白村江の戦い, Hakusuki-no-e no Tatakai / Hakusonkō no Tatakai) in Japan, as Battle of Baijiangkou ( zh, c=白江口之战, p=Bāijiāngkǒu Zhīzh ...

in 663, the Yamato court feared an invasion from either or both Tang or Silla. In response, they built a huge network of shore fortifications throughout the rest of the 600s, often with the assistance of Baekje engineers, generals and artisans. Unaware of the outbreak of the Silla-Tang War (670–676), the Japanese would continue to build fortifications until 701, after finding out that Silla was no longer friendly with Tang. Kiyama is one such fortification. Kiyama is located on Mount Shiroyama (elevation 462 meters), which is part of the

Setonaikai National Park is a Japanese national park, comprising areas of Japan's Seto Inland Sea, and of ten bordering prefectures. Designated a national park in 1934, it has since been expanded several times. It contains about 3,000 islands, known as the Setouchi Isl ...

, and which straddles the border between Sakaide and

in northern Kagawa Prefecture. The castle doe snot appear in written literature, and its name is taken from the name of the mountain. At present, a

golf course A golf course is the grounds on which the sport of golf is played. It consists of a series of holes, each consisting of a tee box, a fairway, the rough and other hazards, and a green with a cylindrical hole in the ground, known as a "cup". Th ...

(Takamatsu Country Club) occupies the site and the ruins, including the remnants of gates and stone walls are scattered around the grounds. At the foot of the mountain is the presumed location of the ''

provincial capital A capital city or capital is the municipality holding primary status in a country, state, province, department, or other subnational entity, usually as its seat of the government. A capital is typically a city that physically encompasses the g ...

'' of ancient

Sanuki Province was a province of Japan in the area of northeastern Shikoku. Nussbaum, Louis-Frédéric. (2005). "''Sanuki''" in . Sanuki bordered on Awa to the south, and Iyo to the west. Its abbreviated form name was . In terms of the Gokishichidō system, ...

. As Kiyama is not mentioned in any documents, its chronology is unclear and

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 have uncovered few relics. Its layout and design of walls place it as one of many similar fortifications extending across the northern part of

Kyushu is the third-largest island of Japan's five main islands and the most southerly of the four largest islands ( i.e. excluding Okinawa). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surroun ...

and in other locations along the coast of the Seto Inland Sea, including Einōsan Castle and Yashima, as well as

Ki castle was a Japanese castle of the ''kōgoishi'' type, constructed in the late 7th century by the Yamato Imperial court. The site, atop Kijō Mountain in what is today the Okayama Prefecture town of Sōja, is considered a national monument. Portions o ...

Okayama Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,906,464 (1 February 2018) and has a geographic area of 7,114 Square kilometre, km2 (2,746 sq mi). Okayama Prefectur ...

on the opposite bank of the Seto Inland Sea. This location allowed it to monitor maritime traffic and was a key point access to Sanuki and the hinterlands of Shikoku. Shiroyama Shrine, a

Shinto Shrine A is a structure whose main purpose is to house ("enshrine") one or more ''kami'', the deities of the Shinto religion. Overview Structurally, a Shinto shrine typically comprises several buildings. The '' honden''Also called (本殿, meani ...

located at the foot of the mountain appears in historical records in the ninth century, and appears to have been an ancient facility related to the castle. The castle consisted of two concentric bands of walls encircling the top of the mountain.The inner wall extends for 3.5 kilometers and is mostly earthwork, measuring 1.5 to two meters in height and six to seven meters in width. Only the sides of gates were reinforced with stone. The outer wall extends for 4.2 kilometers , and is around one meter in height and three meters in width. However, there is also a theory that Shiroyama Castle is not completed because the top foundation stones are scattered at irregular intervals. There are little remains of the castle on the present day site, just some stone walls and earthworks.

Access

The site is about 15 minutes by car from Kamogawa Station on the

JR Shikoku The , commonly known as , is the smallest of the seven constituent companies of the Japan Railways Group (JR Group). It operates of intercity and local rail services in the four prefectures on the island of Shikoku in Japan. The company has it ...

Yosan Line The is the principal railway line on the island of Shikoku in Japan, connecting the major cities of Shikoku, and via the Honshi-Bisan Line, with Honshu. It is operated by the Shikoku Railway Company (JR Shikoku), and is aligned approximately pa ...

Gallery

File:Mount Ki (Kagawa), zenkei.jpg, Kiyama Kiyama Castle (Sanuki), Sekirui.jpg, Stone wall of Kiyama Kiyama Castle (Sanuki), Suimon.jpg, Water gate

References

Literature

* *

External links