Shizuhatagayama Kofun, Ancient burial mound at Shizuoka Sengen Shrine, Japan

Shizuhatagayama Kofun is a circular burial mound, 32 meters in diameter and 7 meters high, on a hill behind the main hall of Shizuoka Sengen Shrine. Its horizontal stone chamber, the largest in Shizuoka Prefecture at 11.5 meters long, opens south through a passage. The chamber holds a house-shaped stone sarcophagus made of Izu tuff.

Built in the late 6th century, the mound was used for repeated burials into the early 7th century. Its chamber held a house-shaped sarcophagus of tuff from Izu, while the stone chamber itself used tuff from the Ōkuzure coast near Takakusa-yama. Grave goods include a gilt-bronze crown, more than 90 Sue ware vessels, weapons, horse trappings and bronze bowls.

The 600 head-sized boulders from the Abe River were used to close the burial chamber's entrance, not to build the mound itself. Visitors can also see the house-shaped sarcophagus of Izu tuff, whose lid has eight rope-hanging protrusions, and red pigment traces where lid and body meet.

The mound stands behind the Honden of Ohtoshimioya Shrine inside the Shizuoka Sengen Shrine grounds, at 102 Miyagasaki-cho. The stone chamber is lit from 8:00 to 18:00, but entry into it is restricted, so the interior is seen from outside. From Shizuoka Station take the Shizutetsu bus (Abe or Miwa-Oya line) to Akatorii Sengen Jinja Iriguchi, then walk about three minutes.

The chamber's tuff stones came from the Ōkuzure coast at the southern tip of Takakusa-yama, while the sarcophagus is cut from tuff quarried at Shizuura in Numazu. Red pigment (bengara) remains in the seam between the lid and the coffin body, and the lid carries eight rope-hanging projections.