site feature (4)
Pit-dwellings were constructed with pillars, a roof, and a floor created by removing soil. The site exhibits pit-dwellings that were built in the middle of the Jomon period (approximately 4,500 years ago). Three types of roofs—thatched, bark, and mud roofs—have been Reconstructed in the dwellings in accordance with the excavation research results and tribal data. Approximately 700 dwellings have so far been discovered, and they have a different floor shape, pillar arrangement, and furnace structure and location depending on when they were built.