Daisen Kofun

The Mozu Tombs are a group of kofun—megalithic tombs—in Sakai, Osaka Prefecture, Japan. Originally consisting of more than 100 tombs, only less than 50% of the key-hole, round, and rectangular tombs remain.The Daisenryo Kofun, the largest kofun in Japan, is believed to have been constructed over a period of 20 years in the mid 5th century during the Kofun Period. While it cannot be accurately confirmed, it is commonly accepted that the tomb was built for the late Emperor Nintoku. The Imperial Household Agency of Japan treats it as such.