Tsunozuka Kofun

is a keyhole-shaped kofun burial mound located in the Isawa district of the city of Ōshū, Iwate in the Tōhoku region of northern Japan. It is significant in that it is the northernmost keyhole-shaped kofun yet discovered, and indicates the penetration of Kofun period culture into lands traditionally considered part of the Emishi cultural zone.

The Tsunozuka Kofun is located in the southern portion of the Kitakami Basin of the Kitakami River on the alluvial fan of the Isawa River. The tomb does not appear in any historical records and the name of rank of the person buried within is unknown. From the style of the mound and grave goods uncovered within, archaeologists have dated the kofun to the late 5th or early 6th century AD.

The kofun was excavated in 1935 and 1945, during which time a number of haniwa were discovered. However, it was not until 1947 that archaeologists confirmed that the structure was that of a keyhole-shaped kofun. The site received protection as an Iwate Prefectural Historic Site in 1957. During further excavations held from 1974-1975, more haniwa and the fukiishi stones which originally covered the tomb were uncovered. The site received further protection as a National Historic Site in 1985.

Total length: 43–45 meters
Circular Portion: 2-stages, 28 meter diameter x 4 meter height
Keyway Portion: 10 meter width in the north, tapering out to 15 meters in the south, 1.5 meter height

The artifacts uncovered in excavations are preserved at the Isawa Local History Museum.

See also

List of Historic Sites of Japan (Iwate)

References

External links

 Oshu City Tourist Information 
Cultural Heritage Online 

Category:Kofun
Category:History of Iwate Prefecture
Category:Ōshū, Iwate
Category:Historic Sites of Japan
Category:Mutsu Province