Tsukumo Shell Mound
Kasaoka, Japan
The Tsukumo Shell Mound (Tsukumo kaizuka) is an archaeological site in the Nishioshima neighborhood of the city of Kasaoka, Okayama Prefecture, in the San'yō region of western Japan. It contains a Jōmon period shell midden, and was designated a National Historic Site in 1968.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).