Higashiumazuka Kofun is a square mounded tomb constructed on the outer bank of Ojin-tenno-ryo Kofun [33-1]. Given its position, this tomb is considered to be closely related to Ojin-tenno-ryo Kofun as a satellite tomb.
The mound length is 30 m, and its height is 3.5 m.
Cylindrical haniwa have been unearthed from the foot of the mound.
The construction period dates to the first half of the 5th century.