During the Tumulus period, when emperors were called "Great Kings" ("okimi" in Japanese) in the Yamato kingdom, an emperor's tumulus was built in a circular shape with a rectangular frontage (from the tumulus of Kaika, the ninth emperor to that of Bidatsu, the thirtieth emperor). |
天皇が大王 (ヤマト王権)(おおきみ)と呼ばれていた古墳時代には、その陵は巨大な前方後円墳であった(9代開化陵~30代敏達陵)。 |