The north side was severely damaged due to the construction of the hall, leaving a current total length of 92 meters.

The tumulus was built using rammed earth, which is rare for a kofun burial mound.

These included gilt-bronze sandals, iron swords, spears, axes, horse harnesses, and Sue ware earthenware.

From these artifacts, it is estimated that the tumulus was constructed in the latter half of the 6th century in the late Kofun period.

The Imaichi Dainenji Kofun is located about one kilometer to the east of Izumoshi Station on the JR West San'in Main Line.