Kanayama Kofun, Ancient burial mound in Kanan, Japan.

Kanayama Kofun is a sōen-fun, a burial mound shaped like two joined circles, in Seryutani, Kanan, Osaka. The north mound is 38.6 m across and two-tiered; the south mound is 55.4 m across and three-tiered, giving a total length of 85.8 m. A double-circular moat about 1.4 m deep surrounds the mound, and the north mound holds a 10.6 m stone chamber with two tuff house-shaped sarcophagi.

This burial site dates to when such mounds were built across Japan for high-ranking individuals. Scientific study in the mid-1900s revealed the internal chamber and helped scholars understand burial practices of that period.

The mound shows how important people were buried during this era and what objects were placed with them for the afterlife. The site reveals beliefs about status and the role of the deceased in their community.

The site is located in a rural area and is best reached by public transportation from nearby stations. Wear comfortable shoes since you will walk around the grounds, and visit during clear weather to fully appreciate the earthwork forms.

The northern tumulus's stone chamber is 10.6 metres long and holds two tuff house-shaped sarcophagi, one in the burial chamber and one in the entry passage. The passage coffin is slightly smaller and its lid has differently shaped rope-hanging projections, so it is thought to be a later secondary burial.