Komoyamazuka Kofun is a scallop shell-shaped mounded tomb constructed on the west side of the round rear part of Nintoku-tenno-ryo Kofun [2-1]. It is thought to be related to Nintoku-tenno-ryo Kofun as a satellite tomb.
The surviving length of the mound is 33 m, and its height is 4 m.
Both cylindrical and representational haniwa have been unearthed from the mound.
The construction period dates to the first half of the 5th century.