Ishibutai Kofun is a stone kofun tumulus of the Asuka period in the east of Shimanoshō, Asuka, Nara Prefecture, Japan. The kofun is believed to be the tomb of Soga no Umako. It occupies a space of 54 m, and is the largest known megalithic structure in Japan. The kofun is also known as the Ishibutoya Kofun.
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Address Japan
Coordinates 34°28'0.642" N 135°49'33.945" E