Andonyama Kofun is the Kofun of Emperor Suijin who is the 10th Emperor of Japan.
Size: 242m long and 23m tall with a surrounding moat.
Emperor Suijin has also the entitled as the founder of Japan in Japanese Myth. He is concidered as the first real Emperor who might exisited in Japan. He commanded 4 general to conquare all of Japan and build a strong Empire.