01 / Ohora Shell Mound
Late Jomon pottery types were setusing finds from this shell mound.
In 1925 Tohoku Imperial University excavated the site, and pottery from each shell-mound area was used to set up the Ohora B, B-C, C1, C2, A and A' types, a chronology of the Late Jomon period. They are found widely from the Tohoku region to southern Hokkaido, and this shell mound is their type site.
- National Historic Site, 2001
- Ohora B to A' types set up
- Excavated 1925 by Tohoku Imperial University

