01 / Tomb
The inner chamber's walls, floorand ceiling are all single stones.

Tsukamari Kofun belongs to the Hiraishi tumulus group and dates from the final phase of the kofun period; it is said to be likely a large square tumulus. The inner chamber is 2.3 m long and 1.31 m wide and high, and opens to the south. Although looted, it yielded many fragments of a coffin stand, a basket coffin, an iron sword and glass beads.
- Final-phase tomb of the Hiraishi group
- Inner chamber 2.3 m long, 1.31 m wide and high
- Chamber opens to the south

