The establishment of the Idojiri Archaeological Museum stems from community-based excavation at Idojiri, a Middle Jomon Period (c. 3,500?2,500 BC) site complex, that involved participation independent scholars, school teachers, and local residents from 1958. The museum is located at the southern foot of Mt Yatsugatake and provides a magnificent view of Mt. Fuji, Mt. Kai-Komagatake and the three peaks of Mt. Houo. The highlight of the archaeological collection are artifacts from Idojiri and the Middle Jomon site complex around Idojiri. The exhibition of this museum centers on the Jomon cultivate plant hypothesis and the iconographical interpretation of the patterns of Jomon pottery vessels advocated by local authorities.