 Its abandonment was likely due to the population's subsistence economy being unable to result in sustained growth, with its end being spurred on by the reduced amount of natural resources during the neoglaciation.The Jōmon period continued up to 300 BCE in present-day Aomori Prefecture at the Kamegaoka site in the city of Tsugaru where the "Shakōki-dogū" was found.During the Yayoi period the area that would become Aomori Prefecture was impacted by the migration of settlers from continental Asia to a lesser extent than the rest of Japan to the south and west of the region.