Zenpō-kōhō-fun

are a kind of Kofun.

They are like Zenpō-kōen-fun but they are rectangular, with a square body instead of a circular body. They are smaller than Zenpō-kōen-fun.

They are sometimes called Keyhole-shaped tumuli, but that term is also used for Zenpō-kōen-fun.

There are many types of Kofun including Zenpō-kōen-fun and Zenpō-kōhō-fun and Round Kofun and Square Kofun  

References

Category:Zenpō-kōhō-fun
Category:Kofun
Category:Kofun