Sometime between 450 and 650 A.D. the survivors buried their loved one high up this small mountain's south face surrounded by the flatland of the valley below. The nearest sign is for mound #24 of 7.9m diameter.
See also, en.wikipedia.org/wiki/Kofun
Press L for lightbox (large) view; click the image or press Z for full image display.
Hover the mouse pointer over the image for pop-up remarks.