Kofun (古墳, from Sino-Japanese "ancient burial mound") are megalithic tombs or tumuli in Northeast Asia. Kofun were mainly constructed in the Japanese archipelago between the middle of the 3rd century to the early 7th century AD.[1]

Daisen Kofun, the largest of all kofun, one of many tumuli in the Mozu kofungun, Sakai, Osaka Prefecture (5th century)

The term is the origin of the name of the Kofun period, which indicates the middle 3rd century to early–middle 6th century. Many kofun have distinctive keyhole-shaped mounds (zempō-kōen fun (前方後円墳)). The Mozu-Furuichi kofungun or tumulus clusters were inscribed on the UNESCO World Heritage List in 2019, while Ishibutai Kofun is one of a number in Asuka-Fujiwara residing on the Tentative List.[2][3]

Overview

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Reconstructed model of a late 4th century zenpō-kōen-fun (Kaichi Kofun), Nantan, Kyoto Prefecture

The kofun tumuli have assumed various shapes throughout history. The most common type of kofun is known as a zenpō-kōen-fun (前方後円墳), which is shaped like a keyhole, having one square end and one circular end, when viewed from above. There are also circular-type (empun [ja] (円墳)), "two conjoined rectangles" typed (zenpō-kōhō-fun [ja] (前方後方墳)), and square-type (hōfun [ja] (方墳)) kofun. Orientation of kofun is not specified. For example, in the Mozu kofun group, in Sakai, several of the circular parts are facing north, while other face east. However, there is no such formation in the Yanagimoto kofun group. Haniwa, terracotta figures, were arrayed above and in the surroundings to delimit and protect the sacred areas.

Kofun range from several metres to over 400 m long. The largest, which has been attributed to Emperor Nintoku, is Daisen Kofun in Sakai City, Osaka Prefecture.

The funeral chamber was located beneath the round part and comprised a group of megaliths. In 1972, the unlooted Takamatsuzuka Tomb was found in Asuka, and some details of the discovery were revealed. Inside the tightly assembled rocks, white lime plasters were pasted, and colored pictures depict the 'Asuka Beauties' of the court as well as constellations. A stone coffin was placed in the chamber, and accessories, swords, and bronze mirrors were laid both inside and outside the coffin. The wall paintings have been designated national treasures and the grave goods as important cultural property, while the tumulus is a special historic site.[4][5]

Locations and number

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Distribution of Zenpokoenfun

Kofun burial mounds and their remains have been found all over Japan, including remote islands such as Nishinoshima.[6]

A total of 161,560 kofun tomb sites have been found as of 2001. Hyōgo Prefecture has the most of all prefectures (16,577 sites), and Chiba Prefecture has the second most (13,112 sites).[7]

History

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Yayoi period

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Distribution of tombs in the Late Yayoi Period

Most of the tombs of chiefs in the Yayoi period were square-shaped mounds surrounded by ditches. The most notable example in the late Yayoi period is Tatetsuki Mound Tomb in Kurashiki, Okayama. The mound is about 45 metres wide and 5 metres high and has a shaft chamber. Broken pieces of Tokushu-kidai, cylindrical earthenware, were excavated around the mound.

Another prevalent type of Yayoi period tomb is the Yosumi tosshutsugata funkyūbo, a square mound with protruding corners. These tombs were built in the San'in region, a coastal area off the Sea of Japan. Unearthed articles indicate the existence of alliances between native tribes in the region.

Early Kofun period

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Circular groove tomb at Seta Ruins (Kashihara City, Nara Prefecture)
 
Panoramic view of Hashinaka Kofun in Sakurai, Nara

One of the first keyhole-shaped kofun was built in the Makimuku area,[8] the southeastern part of the Nara Basin. Hashihaka Kofun, which was built in the middle of the 3rd century AD, is 280 metres long and 30 metres high. Its scale is obviously different from previous Yayoi tombs. During the next three decades, about 10 kofun were built in the area, which are now called as the Makimuku Kofun Group. A wooden coffin was placed on the bottom of a shaft, and the surrounding walls were built up by flat stones. Finally, megalithic stones formed the roof. Bronze mirrors, iron swords, magatama, clay vessels and other artifacts were found in good condition in undisturbed tombs. Some scholars assume the buried person of Hashihaka kofun was the shadowy ancient Queen Himiko of Yamataikoku, mentioned in the Chinese historical texts. According to the books, Japan was called Wa, which was the confederation of numerous small tribes or countries. The construction of gigantic kofun is the result of the relatively centralized governmental structure in the Nara Basin, possibly the origin of the Yamato polity and the Imperial lineage of Japan.

Mid-Kofun period

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During the 5th century AD, the construction of keyhole kofun began in Yamato Province; continued in Kawachi, where gigantic kofun, such as Daisen Kofun of the Emperor Nintoku, were built; and then throughout the country. The proliferation of keyhole kofun is generally assumed to be evidence of the Yamato court's expansion in this age. However, some argue that it simply shows the spread of culture based on progress in distribution, and has little to do with a political breakthrough.

A few tombs from the mid-Baekje era were excavated around the Yeongsan River basin in South Korea.[citation needed] The design of these tombs are notably different. The tombs that were discovered on the Korean peninsula were built between the 5th and 6th centuries CE.[citation needed] There remain questions about who were buried in these tombs such as nobility, aristocracy, warriors or mercenaries.

Late Kofun period

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The stone chamber of Ishibutai Kofun, said to be the tomb of Soga no Umako, Asuka, Nara Prefecture (7th century)

Keyhole-shaped kofun disappeared in the late 6th century AD, probably due to the drastic reformation in the Yamato court. Nihon Shoki records the introduction of Buddhism during this era, which led to cremation becoming the primary funerary means of the nobility.

Types

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Round Kofun

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A round Kofun

Round Kofun [ja] are a kind of Kofun[9]

Square Kofun

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Otozuka Kofun [ja], A Square Kofun

Square Kofun [ja] (方墳, hōfun) is a kind of Kofun.[10] They are not as common as Zenpokoenfun of Keyhole shaped Kofun.[11]

Scallop Kofun

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a scallop Kofun cgi

Scallop Kofun [ja] is a kind of Kofun. It is defined by a circular body with a small part extending. This can make it an interrmediate between a Keyhole-shaped kofun and a circular-type kofun [ja][12]

Famous examples include Hokenoyama Kofun in the Makimuku ruins.[13][14]: 249  dated to around 250 AD.[14]: 253  and Nyotaizan Kofun.

Octagonal Kofun

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Kengoshizuka Kofun a notable Octagonal Kofun, where Empress Kōgyoku is buried.[15][16]

Octagonal Kofun [ja] (八角墳, hakkaku-fun) is a kind of Kofun. They are a very rare kind characteristic of Emperors

Many Japanese Emperors were buried in them including Empress Kōgyoku in Kengoshizuka Kofun.,[15][16] Emperor Tenji in his Mausoleum,[17] and Emperor Jomei in Dannozuka Kofun[18][19]

From the end of the 6th century to the beginning of the 7th, the tumuli of the monarchs changed from square hōfun tumuli [ja] to octagonal hakkaku-fun [ja] tumuli.[20]

List of Octagonal Kofun

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Zenpō-kōhō-fun

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Ōyasuba Kofun a Zenpō-kōhō-fun
 
general diagram of a zenpō-kōhō-fun

zenpō-kōhō-fun [ja] (前方後方墳, two conjoined rectangles kofun) is a kind of Kofun.[21][22] They are shaped somewhat like the more keyhole shaped Zenpokoenfun, but they have a square body rather than a circular one.[21][23] They tend to be smaller than Zenpokoenfun.[24] Yanaida Nunōyama Kofun is one of the largest of the type[25].

There is a specific style exemplified by Yadani Kofun and Jinyama Tumulus Cluster and Rokuji Kozuka Kofun and Tomisaki Kofungun of Ōzuka-Senbōyama Sites as yosumi-tosshutsugata (四隅突出形), which is square or rectangular, with protrusions on each of its four corners; however, it is unique in that it is not a true rectangle, but has a narrow waist, similar to a "two conjoined rectangles" type (zenpō-kōhō-fun [ja] (前方後方墳)). The slope of the mound is covered with fukiishi -like stones, with a row of larger stones marking its edge, and is surrounded by a two-meter wide moat. The yosumi-tosshutsugata style is unique to the late middle Yayoi period and is most prevalent in western Japan in areas influenced by the Izumo culture.[25]

Joenkahofun

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Musashi Fuchū Kumano Jinja Kofun a Joenkahofun

Joenkahofun [ja] (上円下方墳) is a kind of Kofun.[26][27][28] Such kofun have a round dome top with a square bottom.[27][26][25] This is a quite rare type of Kofun in Japan.[26]

They are associated with the Asuka Period,[27][28]

Musashi Fuchū Kumano Jinja Kofun in Fuchū in Tokyo,[25] and Miyazuka Kofun are two notable examples.[25]

List of Joenkahofun

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Corridor-type kofun

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Yoshimi Hundred Caves a group of Corridor-type Kofun

corridor-type kofun [ja] (横穴式石室, yokoana-shiki sekishitsu) are a kind of Kofun dug as artificial caves in Ancient Japan.[29][30][31]

Zenpokoenfun

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The Zenpokoenfun where Emperor Nintoku is buried in Mozu tombs

Zenpokoenfun are a notable type of Japanese ancient tombs (Kofun), which consists of a square front part (前方部) and a circular back part (後円部).[32] The part connecting the two is called the middle part (くびれ部), which looks like a keyhole when viewed from above.[33]

UNESCO Kofun Group

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This list includes the "Mozu-Furuichi Kofun Group: Mounded Tombs of Ancient Japan",[34] which was inscribed as a UNESCO World Heritage Site on 6 July 2019.[35]

Name Coordinates Property Buffer Zone
Aoyama Kofun 34°33′21″N 135°36′02″E / 34.55583°N 135.60056°E / 34.55583; 135.60056 (Aoyama Kofun) 0.51 ha (1.3 acres)
Chuai-tenno-ryo Kofun 34°33′57″N 135°35′39″E / 34.56583°N 135.59417°E / 34.56583; 135.59417 (Chuai-tenno-ryo Kofun) 9.34 ha (23.1 acres) 350 ha (860 acres)
Dogameyama Kofun 34°33′46″N 135°28′56″E / 34.56278°N 135.48222°E / 34.56278; 135.48222 (Dogameyama Kofun) 0.06 ha (0.15 acres)
Genemonyama Kofun 34°33′55″N 135°29′29″E / 34.56528°N 135.49139°E / 34.56528; 135.49139 (Genemonyama Kofun) 0.09 ha (0.22 acres)
Gobyoyama Kofun 34°33′17″N 135°29′27″E / 34.55472°N 135.49083°E / 34.55472; 135.49083 (Gobyoyama Kofun) 5.4 ha (13 acres)
Hachizuka Kofun 34°34′05″N 135°35′44″E / 34.56806°N 135.59556°E / 34.56806; 135.59556 (Hachizuka Kofun) 0.31 ha (0.77 acres)
Hakayama Kofun 34°33′28″N 135°36′16″E / 34.55778°N 135.60444°E / 34.55778; 135.60444 (Hakayama Kofun) 4.34 ha (10.7 acres)
Hakuchoryo Kofun 34°33′04″N 135°36′16″E / 34.55111°N 135.60444°E / 34.55111; 135.60444 (Hakuchoryo Kofun) 5.65 ha (14.0 acres)
Hanzei-tenno-ryo Kofun 34°34′34″N 135°29′18″E / 34.57611°N 135.48833°E / 34.57611; 135.48833 (Hanzei-tenno-ryo Kofun) 4.06 ha (10.0 acres)
Hatazuka Kofun 34°33′24″N 135°28′58″E / 34.55667°N 135.48278°E / 34.55667; 135.48278 (Hatazuka Kofun) 0.38 ha (0.94 acres)
Hazamiyama Kofun 34°33′42″N 135°36′08″E / 34.56167°N 135.60222°E / 34.56167; 135.60222 (Hazamiyama Kofun) 1.5 ha (3.7 acres)
Higashiumazuka Kofun 34°33′50″N 135°36′44″E / 34.56389°N 135.61222°E / 34.56389; 135.61222 (Higashiumazuka Kofun) 0.03 ha (0.074 acres)
Higashiyama Kofun 34°33′42″N 135°36′21″E / 34.56167°N 135.60583°E / 34.56167; 135.60583 (Higashiyama Kofun) 0.41 ha (1.0 acre)
Ingyo-tenno-ryo Kofun 34°34′23″N 135°37′00″E / 34.57306°N 135.61667°E / 34.57306; 135.61667 (Ingyo-tenno-ryo Kofun) 6.43 ha (15.9 acres)
Itasuke Kofun 34°33′11″N 135°29′09″E / 34.55306°N 135.48583°E / 34.55306; 135.48583 (Itasuke Kofun) 2.42 ha (6.0 acres)
Joganjiyama Kofun 34°33′25″N 135°36′07″E / 34.55694°N 135.60194°E / 34.55694; 135.60194 (Joganjiyama Kofun) 0.52 ha (1.3 acres)
Komoyamazuka Kofun 34°34′01″N 135°29′03″E / 34.56694°N 135.48417°E / 34.56694; 135.48417 (Komoyamazuka Kofun) 0.08 ha (0.20 acres)
Komuroyama Kofun 34°34′05″N 135°36′34″E / 34.56806°N 135.60944°E / 34.56806; 135.60944 (Komuroyama Kofun) 2.92 ha (7.2 acres)
Kurizuka Kofun 34°33′46″N 135°36′45″E / 34.56278°N 135.61250°E / 34.56278; 135.61250 (Kurizuka Kofun) 0.11 ha (0.27 acres)
Magodayuyama Kofun 34°33′36″N 135°29′06″E / 34.56000°N 135.48500°E / 34.56000; 135.48500 (Magodayuyama Kofun) 0.45 ha (1.1 acres)
Maruhoyama Kofun 34°34′01″N 135°29′07″E / 34.56694°N 135.48528°E / 34.56694; 135.48528 (Maruhoyama Kofun) 0.69 ha (1.7 acres)
Minegazuka Kofun 34°33′08″N 135°35′50″E / 34.55222°N 135.59722°E / 34.55222; 135.59722 (Minegazuka Kofun) 1.12 ha (2.8 acres)
Mukohakayama Kofun 34°33′26″N 135°36′22″E / 34.55722°N 135.60611°E / 34.55722; 135.60611 (Mukohakayama Kofun) 0.33 ha (0.82 acres)
Nabezuka Kofun 34°34′18″N 135°36′53″E / 34.57167°N 135.61472°E / 34.57167; 135.61472 (Nabezuka Kofun) 0.14 ha (0.35 acres)
Nagatsuka Kofun 34°33′28″N 135°29′15″E / 34.55778°N 135.48750°E / 34.55778; 135.48750 (Nagatsuka Kofun) 0.51 ha (1.3 acres)
Nagayama Kofun 34°34′05″N 135°29′12″E / 34.56806°N 135.48667°E / 34.56806; 135.48667 (Nagatsuka Kofun) 0.97 ha (2.4 acres)
Nakatsuhime-no-mikoto-ryo Kofun 34°34′12″N 135°36′45″E / 34.57000°N 135.61250°E / 34.57000; 135.61250 (Nakatsuhime-no-mikoto-ryo Kofun) 7.23 ha (17.9 acres)
Nakayamazuka Kofun 34°34′05″N 135°36′49″E / 34.56806°N 135.61361°E / 34.56806; 135.61361 (Nakayamazuka Kofun) 0.24 ha (0.59 acres)
Nintoku-tenno-ryo Kofun, Chayama Kofun and Daianjiyama Kofun 34°33′53″N 135°29′16″E / 34.56472°N 135.48778°E / 34.56472; 135.48778 (Nintoku-tenno-ryo Kofun, Chayama Kofun and Daianjiyama Kofun) 46.4 ha (115 acres)
Nisanzai Kofun 34°32′45″N 135°29′58″E / 34.54583°N 135.49944°E / 34.54583; 135.49944 (Nisanzai Kofun) 10.53 ha (26.0 acres)
Nishiumazuka Kofun 34°33′22″N 135°36′24″E / 34.55611°N 135.60667°E / 34.55611; 135.60667 (Nishiumazuka Kofun) 0.07 ha (0.17 acres)
Nonaka Kofun 34°33′32″N 135°36′16″E / 34.55889°N 135.60444°E / 34.55889; 135.60444 (Nonaka Kofun) 0.19 ha (0.47 acres)
Ojin-tenno-ryo Kofun, Konda-maruyama Kofun and Futatsuzuka Kofun 34°33′44″N 135°36′34″E / 34.56222°N 135.60944°E / 34.56222; 135.60944 (Ojin-tenno-ryo Kofun, Konda-maruyama Kofun and Futatsuzuka Kofun) 28.92 ha (71.5 acres)
Osamezuka Kofun 34°33′32″N 135°29′17″E / 34.55889°N 135.48806°E / 34.55889; 135.48806 (Osamezuka Kofun) 0.07 ha (0.17 acres)
Otorizuka Kofun 34°34′01″N 135°36′32″E / 34.56694°N 135.60889°E / 34.56694; 135.60889 (Otorizuka Kofun) 0.51 ha (1.3 acres)
Richu-tenno-ryo Kofun 34°33′14″N 135°28′39″E / 34.55389°N 135.47750°E / 34.55389; 135.47750 (Richu-tenno-ryo Kofun) 17.3 ha (43 acres)
Shichikannon Kofun 34°33′24″N 135°28′47″E / 34.55667°N 135.47972°E / 34.55667; 135.47972 (Shichikannon Kofun) 0.09 ha (0.22 acres)
Suketayama Kofun 34°34′05″N 135°36′47″E / 34.56806°N 135.61306°E / 34.56806; 135.61306 (Suketayama Kofun) 0.12 ha (0.30 acres)
Tatsusayama Kofun 34°33′40″N 135°29′00″E / 34.56111°N 135.48333°E / 34.56111; 135.48333 (Tatsusayama Kofun) 0.34 ha (0.84 acres)
Terayama-minamiyama Kofun 34°33′22″N 135°28′48″E / 34.55611°N 135.48000°E / 34.55611; 135.48000 (Terayama-minamiyama Kofun) 0.42 ha (1.0 acre)
Tsudo-shiroyama Kofun 34°34′55″N 135°35′37″E / 34.58194°N 135.59361°E / 34.58194; 135.59361 (Tsudo-shiroyama Kofun) 4.74 ha (11.7 acres) 23 ha (57 acres)
Tsukamawari Kofun 34°33′46″N 135°29′26″E / 34.56278°N 135.49056°E / 34.56278; 135.49056 (Tsukamawari Kofun) 0.07 ha (0.17 acres)
Yashimazuka Kofun 34°34′05″N 135°36′52″E / 34.56806°N 135.61444°E / 34.56806; 135.61444 (Yashimazuka Kofun) 0.25 ha (0.62 acres)
Zenemonyama Kofun 34°33′10″N 135°29′12″E / 34.55278°N 135.48667°E / 34.55278; 135.48667 (Zenemonyama Kofun) 0.1 ha (0.25 acres)
Zenizuka Kofun 34°33′19″N 135°29′04″E / 34.55528°N 135.48444°E / 34.55528; 135.48444 (Zenizuka Kofun) 0.3 ha (0.74 acres)

Aerial photos

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See also

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Notes

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  1. ^ 岡田裕之「前方後円墳」『日本古代史大辞典』大和書房、2006年。ISBN 978-4479840657
  2. ^ "Mozu-Furuichi Kofungun, Ancient Tumulus Clusters". UNESCO. Retrieved 18 May 2011.
  3. ^ "Asuka-Fujiwara: Archaeological sites of Japan's Ancient Capitals and Related Properties". UNESCO. Retrieved 18 May 2011.
  4. ^ "Database of National Cultural Properties". Agency for Cultural Affairs. Retrieved 14 May 2011.
  5. ^ "Database of National Cultural Properties". Agency for Cultural Affairs. Retrieved 14 May 2011.
  6. ^ 島根県遺跡データベース Archaeological Database of Shimane(Japanese)
  7. ^ 兵庫県教育委員会 兵庫県の遺跡・遺物数の全国的な位置(pdf file, Japanese)
  8. ^ Krako-kagi Archaeological Museum (2013). "たわらもと2013発掘速報展". Comprehensive Database of Archaeological Site Reports in Japan. Retrieved 2016-09-01.
  9. ^ "About kofun -Scale and order- | Nonaka Kofun-Project for the Preservation and Utilization of Artifacts from Nonaka Kofun/Osaka University Department of Archaeology". www.let.osaka-u.ac.jp. Retrieved 2023-11-10.
  10. ^ "About kofun -Scale and order- | Nonaka Kofun-Project for the Preservation and Utilization of Artifacts from Nonaka Kofun/Osaka University Department of Archaeology". www.let.osaka-u.ac.jp. Retrieved 2023-10-20.
  11. ^ admin (2022-10-24). "iCLA Students Study Ancient Burial Mound with Dr. Darren Ashmore". International College of Liberal Arts (iCLA). Retrieved 2023-10-23.
  12. ^ Mozu-Furuichi Kofun Group. Chapter 2: Description (PDF). pp. 21–163.
  13. ^ "Hokenoyama Kofun - Long Barrow in Japan in Honshū". The Megalithic Portal. Retrieved 2023-11-10.
  14. ^ a b Kidder, J. Edward (2007-02-28), "Himiko and Japan's Elusive Chiefdom of Yamatai: Archaeology, History, and Mythology", Himiko and Japan's Elusive Chiefdom of Yamatai, University of Hawaii Press, doi:10.1515/9780824862848, ISBN 978-0-8248-6284-8, retrieved 2023-11-10
  15. ^ a b "Kengoshizuka Kofun Tumulus, Koshitsuka-gomon Kofun Tumulus". Exploring the Footsteps of the Heroines of Asuka. Retrieved 2023-10-20.
  16. ^ a b "Octagonal burial mound said to belong to ancient Japan empress reconstructed in Nara Pref". Mainichi Daily News. 2022-03-04. Retrieved 2023-10-20.
  17. ^ "Gobyōyama Kofun (in Kyōto) [Gobyoyama Kofun 御廟山古墳, Tenji Tennō-ryō Tenji Tennoryo 天智天皇] Passage Grave". The Megalithic Portal and Megalith Map. Retrieved 2023-10-21.
  18. ^ Hays, Jeffrey. "ASUKA, FUJIWARA AND ASUKA-ERA CITIES AND TOMBS | Facts and Details". factsanddetails.com. Retrieved 2023-10-20.
  19. ^ "Dan-no-tsuka Kofun [Dannotsuka Kofun 段ノ塚古墳, Jomei Tennō-ryō Jomei Tennnoryo 舒明天皇] Passage Grave : The Megalithic Portal and Megalith Map". 2023-10-16. Archived from the original on 2023-10-16. Retrieved 2023-10-20.
  20. ^ Niiro 1992, p. 160.
  21. ^ a b "About kofun -Scale and order- | Nonaka Kofun-Project for the Preservation and Utilization of Artifacts from Nonaka Kofun/Osaka University Department of Archaeology". www.let.osaka-u.ac.jp. Retrieved 2023-10-19.
  22. ^ Laporte, Luc; Large, Jean-Marc; Nespoulous, Laurent; Scarre, Chris; Steimer-Herbet, Tara (2022-08-22). Megaliths of the World. Archaeopress Publishing Ltd. ISBN 978-1-80327-321-1.
  23. ^ Laporte, Luc; Large, Jean-Marc; Nespoulous, Laurent; Scarre, Chris; Steimer-Herbet, Tara (2022-08-22). Megaliths of the World. Archaeopress Publishing Ltd. p. 722. ISBN 978-1-80327-321-1.
  24. ^ Ikehara-Tsukayama, Hugo C.; Ruiz, Juan Carlos Vargas (2022-04-18). Global Perspectives on Landscapes of Warfare. University Press of Colorado. ISBN 978-1-64642-211-1.
  25. ^ a b c d e Isomura, Yukio; Sakai, Hideya (2012). (国指定史跡事典) National Historic Site Encyclopedia. 学生社. ISBN 978-4311750403.(in Japanese)
  26. ^ a b c "Nara National Research Institute for Cultural Properties". www.nabunken.go.jp. Retrieved 2023-10-20.
  27. ^ a b c "Kofun Culture". www.t-net.ne.jp. Retrieved 2023-10-20.
  28. ^ a b Hays, Jeffrey. "ASUKA, FUJIWARA AND ASUKA-ERA CITIES AND TOMBS | Facts and Details". factsanddetails.com. Retrieved 2023-10-20.
  29. ^ "Sakushima Ancient Tomb Mounds (Kofun) – 西尾観光". nishiokanko.com. Retrieved 2023-10-23.
  30. ^ "Unique burial concepts: Diversity of tomb systems|Southern Kyushu's Remarkable Kofun Culture|Kofun as World Cultural Heritage". www.miyazaki-archive.jp. Retrieved 2023-10-23.
  31. ^ Yamamoto, Takafumi (September 2019). "Baekje and Honam Seen from the Perspective of Construction Techniques of Corridor-Type Stone Chambers : Tomb Groups of the Ungjin Period Baekje and Yeongsan River Basin" (PDF). National Institutes for the Humanities - Bulletin of the National Museum of Japanese History. pp. 287–288. Archived from the original (PDF) on 29 October 2023.
  32. ^ "前方後円墳". Kotobank (in Japanese).
  33. ^ "What are these keyhole-shaped mounds?". BBC. 2019-10-03. Archived from the original on 2020-11-16. Retrieved 2020-10-13.
  34. ^ "Mozu-Furuichi Kofun Group: Mounded Tombs of Ancient Japan". UNESCO. 6 July 2019.
  35. ^ "Seven cultural sites inscribed on UNESCO's World Heritage List". UNESCO. 6 July 2019.

References

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  • 飛鳥高松塚 (Takamatsuzuka, Asuka), 橿原考古学研究所編, 明日香村, 1972.
  • 前方後円墳 (Keyhole-shaped kofun), 上田宏範, 学生社, 東京, 1969.
  • 前方後円墳と古代日朝関係 (Keyhole-shaped kofun and diplomatic relations between ancient Japan and Korea), 朝鮮学会編, 東京, 同成社, 2002.
  • Niiro, Izumi (1992). "V古墳時代 2古墳 a前・中期". Zukai Nihon no jinrui iseki 図解・日本の人類遺跡. Tokyo Diagaku Shuppankai. ISBN 4-13-026200-9.
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