Zenpō-kōen-fun

Zenpō-kōen-fun (前方後円墳) are a special kind of Kofun. They are for high status people and very large. They have a round and a rectangular part that together look like a keyhole.^{[1][2][3][4][5][6][7][8][9][10]}

They are sometimes called Keyhole-shaped tumuli,^[4] but that term is also used for Zenpō-kōhō-fun.

There are many types of Kofun including Zenpō-kōen-fun and Zenpō-kōhō-fun and Round Kofun and Square Kofun ^[11]