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Yanaidanu-no-Oyama Kofun — 柳田布尾山古墳 後方部墳頂

Megalithic mound (tumulus with integral stones)

Yanaidanu-no-Oyama Kofun

Japan

Datedc. 401–500 CE

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Photo Saigen Jiro · CC0Source file on Wikimedia Commons

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About this site

Overview

Yanaida Nunōyama Kofun (柳田布尾山古墳) is a kofun burial mound in the Yanaida neighborhood of the city of Himi, Toyama, in the Hokuriku region of Japan. It has been protected as a National Historic Site since 2001.

With a length of 107.5 meters it is the largest zenpō-kōhō-fun, a tumulus of the two conjoined rectangles type, on the Sea of Japan coast, and the 10th largest in the country. Its construction is estimated to date from the end of the 3rd to the late 4th century.

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Where it sits in time

The site's dated range, placed against world reference points.

The scale is logarithmic: each step to the left is about ten times older than the last.

  1. Göbekli Tepe9600 BCE
  2. First farming9500 BCE
  3. Avebury2600 BCE
  4. Great Pyramid of Giza2560 BCE
  5. Stonehenge2500 BCE
  6. Bronze Age collapse1200 BCE
  7. Rome founded753 BCE
  8. Parthenon447 BCE
  9. Hadrian's Wall122 CE
  10. Machu Picchu built1450 CE
12,000 BCE8,000 BCE4,000 BCE1 CE1,500 CE
This site

Est. 4000–1200 BCEHow this date was established: Type comparisonTypical for this type

The published range for this kind of monument in this region. It is not a date for this site.
Source for this date

Article

Yanaidanu-no-Oyama Kofun

2 min read416 wordsRead on Wikipedia

It appears to be built on the site of a Yayoi period settlement, as Yayoi pottery has been found in the area.

Yanaida Nunōyama Kofun

Setting

Sources for this section

The tumulus lies in the northwest part of Toyama prefecture, near the eastern base of the Noto Peninsula and approximately two kilometers from the shore of Toyama Bay, at an elevation of approximately 25 meters above sea level. It appears to be built on the site of a Yayoi period settlement, as Yayoi pottery has been found in the area.

Description

Sources for this section

The total length is 107.5 meters. The main portion has two stages and measures 54 meter length x 53 meter width x 10 meter height; the keyway portion also has two stages and measures 53.5 meter length x 49 meter width x 6 meter height. The tumulus is orientated to the north-northwest. It was constructed by partly cutting away the ground on a narrow terrace, so that the embankment volume is about 60% of the total volume. It was surrounded by an amorphous moat 5 to 18 meters wide.

A smaller circular tumulus, 25 meter in diameter and surrounded by a five-meter wide and 1.6 meter deep moat, lies on the eastern rear side of the tomb. Details of its construction are unknown as it has not been excavated.