Excavation of this site turned up an astonishing number of intact artefacts from Japan's Jōmon era (10,000–2,000 years ago), which are on display at the museum here. The actual archaeological site, along with some reconstructed dwellings, form the grounds out back. Sannai Maruyama is approximately 5km west of Aomori Station. City buses leaving from stop 6 for Menkyō Center stop at Sannai Maruyama Iseki-mae (¥300, 20 minutes).
