The site is in what is now part of the city of Hakodate in Oshima Subprefecture on the island of Hokkaido in northern Japan.

The dates of the site's habitation correspond to the early, middle, and late subsections of the Jōmon period of Japanese history.

The community was positioned on a marine terrace alongside the Pacific Ocean where two large earthen mounds were built by the inhabitants of the site.

[1][2] Artifacts found within the site include tablets with footprints that were found in a burial pit, a piece of jade jewelry,[1] and 9,000 year old red lacquerware that are the oldest known pieces of lacquerware in the world.

Initial discoveries included a large pit dwelling and a burial site for the occupants of the community.