01 ／ Washinoki site
Thickly covered by Komagatake's volcanic ash,the Jomon stone circle stayed well preserved.
The nationally designated stone circle was built in the first half of the late Jomon period, about 4,000 years ago. Stones are laid in three rings: outer, inner and central. The outer ring is about 37 m by 34 m. The town gives the number of stones as about 600, the Agency for Cultural Affairs database as about 530.
- First half of the late Jomon period
- Outer ring about 37 m long axis
- About 530 to 600 stones (sources differ)
