of a skull, and an iron artefact that is perhaps part of the hilt of a warabite-to. The circular ditch of Mound 1 is 10 m in diameter and 2 m deep; though disturbed and only the location of the mound is known, part of an iron sword was found from the central area, while an iron plough tip was found in the surrounding ditch. Based on the artifacts discovered, the Ebetsu Tomb Group is believed to have been built between the 7th and 9th centuries.

Significance

During the Kofun period, burial mound construction was concentrated in

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