From the heights of Kōnodai, a site fortified by a series of military barons in the medieval period, Mount Fuji is clearly prominent in the distance. This long bluff along the eastern side of the Tone, now the Edogawa, River is the first high ground of any sort east of the Sumida River, allowing an uninterrupted panorama to the southwest over the seven-mile interval of flat delta area stretching out to Fuji.