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Ushirofutago Kofun

Kofun period burial mound in Japan

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Ushirofutago Kofun

The Ushirofutago tumulus is 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. It has two tiers with a total length of 85 meters, and is orientated 110 degrees northeast. The tumulus partly utilizes a natural hill, which was cut away to contain a semi-underground stone-lined burial chamber. Fukiishi were not discovered. The tumulus had a horseshoe-shaped moat with a total length of 106 meters. The lower tier is much larger than the upper tier, similar to the Azuma Kofun in Tochigi Prefecture and this is a characteristic of tombs in the Kenō region (former Kōzuke and Shimotsuke Provinces). After the discovery of the burial chamber in 1878, an application was issued to the Imperial Household Agency to certify the tumulus as the tomb of King Mimorowake, a name which appears in the Nara period Nihon Shoki chronicle as king of the Kenō region, but the application was denied due to lack of physical evidence.

Total length
85 meters
Anterior rectangular portion
60 meters wide, 2-tier
Posterior circular portion
48 meter diameter x 11 meters high, 2-tiers

The burial chamber had a total length is nine meters, with a height of 2.2 meters high and width of 2.7 meters. A large amount of Sue ware pottery, a long iron sword, short iron sword, horse harnesses, and some iron slag was found within the chamber as grave goods. Eleven earrings were also discovered, leading Meiji period researchers to conclude that at least six people were buried in this kofun. Three human teeth were discovered, and were found to be that of a woman. In the vestibule, there was evidence that fires had been lit at at least three locations to cook food in a ritual banquet for the deceased. Some 400 haniwa were found in various locations around the tumulus. Most were cylindrical, but several are decorated with bas-relief carvings of a monkey, a dog, or a dog chasing a monkey and its child. Such haniwa have been found at only three locations in Japan, all of which have been in Gunma.

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