The landscape some Kansai , inward southern-central Nihon , particularly some Osaka in addition to Nara , is dotted past times curious keyhole-shaped mounds surrounded past times moats. These peculiar structures are ancient burial mounds called kofuns.
Kofuns were built past times the Imperial identify unit of measurement in addition to members of the ruling classes every bit tombs for the noble , the elite in addition to the powerful. They ranged inward size from a few meters to over iv hundred meters long. The to a greater extent than powerful in addition to influential the soul was , the bigger his kofun is. The distinctive keyhole cast appeared betwixt the tertiary in addition to the early on 7th centuries , in addition to is feature of this catamenia of Japanese history. Indeed , the catamenia when kofun started appearing has been named the kofun period.
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Sources: Wikipedia / GMA News Online / Japan Reference