Rokuroseyama Kofun Cluster

The kofun group is located on a hillside at an altitude of 50 to 200 meters above sea level, and consists of at least 130 circular, rectangular and keyhole-shape tumuli, collectively known as the Maruoka Kofun Cluster (丸岡古墳群, Maruoka Kofun-gun), of which the Rokuroseyama Kofun Cluster the portion towards the southeast of the site, at the highest elevation, which overlooks the Kuzuryū River. The site consists of two very large keyhole-shaped tombs (designated No.1 and No.3) and two rectangular tombs (designated No. 2 and No. 4). The tombs are estimated to date from the late 4th to the early 5th century AD. The tombs do not appear in any historical records and the name of rank of the person buried within is unknown.

Kofun No.1 is located at an altitude of 200 meters at the ridgeline of the hill, with a north-south orientation. With a total length of 140 meters, it is the largest found in the Hokuriku region of Japan. The circular portion of the tomb in on the northern end, and has a diameter of 78 meters and a height of 13 meters. The rectangular portion has a length of 52 meters, width of 58 meters and height of 11 meters in two tiers. Large numbers of fukiishi and cylindrical haniwa were found in the area. The circular portion contains a semi-circular chamber with dimensions of 27 x 15 meters with a height of 4.2 meters, which had been broken into a robbed at some indeterminate time. Fragments of a tuff sarcophagus were scattered on the floor.

Kofun No.2 is a rectangular tumuli with dimensions of 16 meters east-west by 11 meters north-south, and a height of 2.2 meters to the east of Kofun No.1. It appears to have been an auxiliary structure to Kofun No.1, but contained no fukiishi and no haniwa.

Kofun No.3 is also a large keyhole-shaped tomb located at the ridgeline of the hill, but with an east-west orientation. It has a length of 85 meters, with the circular portion having a diameter of 48 meters and a height of 11 meters. The rectangular portion has a length of 37 meters, width of 48 meters and height of 9 meters in two tiers. Large numbers of fukuiishi, as well as a large variety of haniwa (cylindrical, house-shaped, trapezoidal, etc.) were found. The burial chamber is orientated to the north, with dimensions of 11 by 11 meters and a height of 1.1 meters. The tomb appears to have been built later than Kofun No.1

Kofun No.4 is also a rectangular tumuli with dimensions of 13 meters east-west by 16 meters north-south, and a height of 2.7 meters to the east of Kofun No.1. It appears to have been an auxiliary structure to Kofun No.3.

• List of Historic Sites of Japan (Fukui)

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• Sakai city home page (in Japanese)
• Fukui Prefectural home page (in Japanese)