01 / Mochida Kofun Cluster
A stone coffin dug up and set on topgave Ishifunezuka its name.

Mound No. 15 is a keyhole-shaped tomb 46m long. Its boat-shaped stone coffin was dug up in the Edo period and set on the top of the rear mound. The largest, Mound No. 1 (Hakarizuka, 計塚), was once written "balance mound" (天秤塚) yet, it seems, read Hakarizuka. Many of the excavated items left the prefecture in the early Showa era.
- National Historic Site (designated 1961)
- Mound 15 (Ishifunezuka): 46m long
- Mound 1 (Hakarizuka): 120m long