01 / Kofun
A keyhole-shaped tomb on a planned housing sitewas saved by citizen volunteers.

A keyhole-shaped mound built in the mid-4th century, 59.5 m long according to the 2016 excavation. It lay on the planned site of the Satsukigaoka housing estate and was due to be lost to development, but it remains as it was, in Chausuyama Park. It is an Osaka Prefecture Historic Site, and protection work was completed in 2018.
- Built in the mid-4th century
- 59.5 m long (2016 survey)
- Prefectural Historic Site, 1972

