It belongs to the Yanagimoto Kofun Group in the southeastern part of the Nara Basin, and is orientated to the west.

[2] During an archaeological excavation conducted by the Kashihara Archaeological Institute of Nara Prefecture from 1997 to 1998, 33 triangular-rimmed "god and beast" bronze mirrors and one slightly older "god and beast" bronze mirror with a painted and written belt were discovered in situ.

A group of arrowheads were found near the north end of the western side of the wooden coffin, with the tips facing south.

The upper half of the deceased was surrounded by mirrors and swords in a U-shape, both inside and outside the coffin, and this arrangement is thought to have ritual significance.

The ceiling is in a gassho-zukuri style, and is made of slabs of stone from Kasugayama and Shibayama at the foot of Mount Nijō.

[2] In an earthquake thought to have occurred in the Kamakura period, the ceiling collapsed into the burial chamber, and the floor was covered with slabs of stone.

In the center of the posterior circular mound, there was a large-scale excavation pit from the Kamakura period that led to the burial chamber, destroying a portion of it.

The grave goods were left intact except at the southern end of the burial chamber.In the late Muromachi period, the Yanagimoto clan used the Kurozuka Kofun to build a fortification, but later fell into disuse.

The excavated items were designated a National Important Cultural Property in 2004, and are owned by the Kashihara Archaeological Institute.