Shiga's second-largest keyhole mound, on the ridge near the summit of Mt. Kojin in Hikone. Hikone City considers that a person with great influence over the Koto plain and lake traffic was buried here.
Finds & research
188 haniwa pieces, including cylindrical and figural types (designated a Hikone City cultural property). A wheel-stone donated by Enju-ji to the Hikone City Board of Education is said to come from Mt. Kojin, but its attribution to this mound is uncertain. The presumed pit-style chamber is unexcavated.
Official status & archaeological view
Official status
National Historic Site (2011) — Hikone's third, after the Hikone Castle Site and the Ii Family Cemetery.
Archaeological view
A 124m keyhole mound — second largest in Shiga — built near the summit ridge of Mt. Kojin around the end of the 4th century; it is a large Early Kofun-period mound. Hikone City considers that its size, location and mound structure point to the burial of a person with great influence over the Koto plain and lake traffic.
Field notes
The 188 city-designated haniwa pieces are held at the Hikone City Kaikoku Memorial Hall.