The site consisted of between 300 and 500 tombs in a 600 by 250 meter area at an elevation of 20-30 meters on a hillside, and are orientated south, east or west, facing the Tagata Plains, Mount Fuji, or Mount Hakone. Per a study by the Nippon University in 1947, the tombs can be divided into five distinct groups based on location and design, which were labelled A through E.