On the southern slope of the hill, three pit dwellings were detected, indicating that there were settlements.

Weedy annuals and shrub fruits and nuts, such as acorns and walnuts, were also used by villagers.

In terms of caloric intake, plant foods made up about half of the diet.

[7] Wood products of all kinds have been found, including lacquered pottery and combs.

The items were found by scholars from Tohoku University who investigated the site in 1984–2011, and they may date to 12,600 years ago.

Also, a woven item made of Boehmeria tricuspis, a vegetable fiber, was found.

[8] The 1981 excavation revealed the presence of some very old dugout canoes at the site; the oldest one was dated 5500 BP.