The Ishibutai Tomb (É╬ĽĹĹń) is the most impressive of the ancient stone monuments in Asuka. It is believed to be the burial tomb for Soga Umako, a powerful leader of the Soga clan that ruled the country for most of the Asuka Period (538-710), while the emperor had become to play a mostly symbolic role.
About 30 massive rocks make up the inner chamber of the tomb that was originally covered by an earthen mound. The largest is part of the ceiling and weighs about 75 tons. Visitors can walk into the chamber and look at the massive rocks from the inside. The Ishibutai Tomb is located within a small park and surrounded by a dry moat.