Ōyu Stone Circles

The Oyu Stone Circles include two circular formations known as Manza and Nonakado, constructed with river stones in distinct geometric patterns.

Archaeological excavations since 1931 revealed numerous artifacts from the Jomon period, leading to the site's designation as a Special Historic Site in 1956.

The stone arrangements demonstrate the Jomon people's knowledge of astronomy, with central stones aligned to mark the summer solstice sunset position.

The Oyu Stone Circle Center provides year-round access to visitors, with admission fees of 320 yen for adults and 110 yen for students.

The Manza circle, measuring 52 meters in diameter, stands as the largest stone circle formation discovered in Japan.

Location: Kazuno

Part of: Jōmon Prehistoric Sites in Northern Japan

Website: https://city.kazuno.akita.jp/kanko_bunka_sports/bunkazai/7

GPS coordinates: 40.27165,140.80380

Latest update: May 27, 2025 11:33