The Jomon is recognized as a hunter-gatherer society, and it is thought that food exploitation in the Jomon period (14,500 BC-950/400 BC) had a minor influence on social change, compared to the introduction of rice cultivation in the beginning of the Yayoi period (950/400 BC-AD250). However, during the Jomon there were some changes in the exploitation of wild resources, which could be related to social changes. From the Middle to the Late Jomon, the exploitation of wild plants changed dramatically. In the Middle Jomon, chestnuts were the main staple. Utilization of horse chestnuts showed a remarkable increase in the Late Jomon. Horse chestnuts were found in waterlogged sites, mostly associated with wooden structures which could have been used for food processing. Japanese folklore examples of the processing of horse chestnuts show that they could have been used to obtain large amounts of nuts. Compared to folklore examples, Jomon wooden structures are larger, which could be due to their use in a communal context. This paper examines Jomon wooden structures and remains found within them, and then explores the potential social impact of the change in food exploitation. (C) 2015 Elsevier Ltd and INQUA. All rights reserved.
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