Suyama Kofun

Suyama Kofun (巣山古墳 ) is a Kofun that is located in Kōryō, Nara of Japan. It is designated as a national Special Historic Site. It has a length of about 204 metres. As of 2000, it was one of a small handful of kofun tombs over 200 metres in length which were not administered by the Imperial Household Agency, as it is not thought to be directly connected to the Imperial line.