Tatsusayama Kofun is a scallop shell-shaped mounded tomb located on the south side of the square front part of Nintoku-tenno-ryo Kofun [2-1]. It is considered to be related to Nintoku-tenno-ryo Kofun as a satellite tomb.
The mound length measures 61 m, and the height of the round rear part is 8 m.
Cylindrical haniwa have been excavated from the moat.
The construction period dates to the second half of the 5th century.