Oyamada Tumulus - Takaichi District

It looks like an Ezo grave. But do you want to set up a school in such an important place?

There is no signboard for Koyamada Kofun since it is on the site of a school for the disabled.

"The first funeral tomb of Emperor Shumei" or "The Mausoleum of Soga Ezo"?

2017/08/24 In the evening news. A large burial mound around the 7th century. From the size of the passage called the entourage, it seems that it has the largest stone chamber in the tumulus of the same period. It may be the tomb of Emperor Jomei and Soga no Emishi, who were the most powerful people at that time.

Although it is an amateur, I think that it must be the grave of Soga no Emishi from a common sense point of view. It must have been exposed and completely destroyed when Mr. Soga was destroyed. However, Miyakozuka, which is said to be the tomb of Iname, has not been completely destroyed. The pyramid-shaped upper seal has been removed, but the stone chamber remains. However, the tomb of Mako (Ishibutai Kofun) was completely removed from the seal, the stone chamber was exposed, and the sarcophagus was also dragged out and destroyed. Even so, the power struggle at the time of mercilessly destroying the tomb is unthinkable in modern times.

2019/01/31 From Sankei News The western end of the burial mound was first confirmed at the Koyamada burial mound (mid-7th century) in Asuka Village, Nara Prefecture, which is said to be the first burial grave of Emperor Jomei, and was announced by the Kashihara Archaeological Institute on the 31st. The east-west width of the mound, which was estimated to be about 70 meters in the previous survey, was found to exceed 80 meters. It is certain that it is one of the largest burial mounds in Japan and the largest burial mound in the Asuka period. In this survey, we confirmed for the first time the terrace at the western end of the mound and the slope with an inclination of about 50 degrees from about 3 meters below the surface of the earth. A large amount of stone materials such as Murou andesite were also excavated, and it was found that the western slope was covered with stone materials as well as the north side. The tumulus is considered to be a trapezoid with a slightly longer south side than the north side, which is about 72 meters long. The distance from the center line of the mound to the survey site is 39.7 meters, and the total length is 79.4 meters when considered symmetrical. If the width of the stone covering the mound is 1.4 meters, it will exceed 80 meters. The scale is close to the Masuyama burial mound (about 90 meters on a side) in Kashihara City, Chiba Prefecture, and it is certain that it will exceed the Ryukakuji Iwaya burial mound (about 78 meters on a side) in Sakae Town, Chiba Prefecture, which was considered to be the largest in the Asuka period. became. At first, Kosaku Okabayashi used the Oyamada Tomb as the first burial grave of Emperor Jomei, but Kosaku Okabayashi, the director of the research department, said at a press conference that day that "there are various discussions within the facility." Soga no Emishi also expressed the view that he may be a burial person for the first time. On the other hand, Director Fuminori Sugaya, who sees it as the first burial grave of Emperor Jomei, said, "It is larger than the Ishibutai Kofun and is suitable for the first burial grave of Emperor Jomei."

Buried burial mound. There used to be a huge burial mound here. (A mound with a side of 70m, estimated to have been built in the mid 7th century (640s)) As a burial person, there is a theory that it is the grave of Soga Ezo and a theory that it is the first place where Emperor Shumei was buried. In the case of the theory that it is the grave of Soga Ezo, It is written in the Nihon Shoki that "(Ezo) built twin tombs before birth. One was a mausoleum and one was a tomb of Ezo and one was a mausoleum and a tomb of Iruka." There is a view that the grave of Ezo and the iris burial mound are considered to be the tomb of Koryo = Iruka. The following articles are published in the Mainichi Shimbun (2017.3.1) in relation to this theory. "After the change of Otomi, the too large Edo mausoleum was destroyed, and Ezo and Iruka, who died in the political change, are believed to have been buried in a small mausoleum (Asuka Village School of Education, Yoshiyuki Aihara, Cultural Property Division Manager). After the change of Otomi, it was a tough time for Mr. Soga, and as a grave of Ezo, that huge tumulus is "unforgivable size". In the iris pond burial mound, the sarcophagus in the back is Ezo and the foreground is Iruka (Professor Emeritus Inokuma) Also, the Sankei Shimbun (2017.3.1) published the following articles from the standpoint of Emperor Shumei's grave. "The Kashihara Institute of Archeology announced that the possibility of the first funerary grave of Emperor Jyomei increased." ... omitted ... In addition, Masafumi Kinoshita, Professor Emeritus Professor of Tokyo Gakugei University, who was in charge of excavating the Asuka and Fujiwara Miya ruins as an employee of the Nara Institute of Cultural Properties, supported the theory of "First Funeral Cemetery of Emperor Shumei". "The largest burial mound in Asuka, which is larger than the mausoleum of the Suiko Emperor. Emperor Shumei embarked on a new politics, including the construction of Baekje Daiji, the starting point of national Buddhism. It is not the scale that Soga can create." ]

Excavations over the past nine times have revealed a rather huge envy, suggesting that it may be the tomb of Emperor Shuming or Soga. Although it is open to the public when it is open to the public, it is usually closed on the premises of a school for the disabled. Of course, the remains are backfilled.