An exhibit at Tama Center’s Jomon Village Archaeological Center revealed that the Jomon people collected shellfish mostly during the spring to summer seasons.
After eating the shellfish, the empty shells would be deposited in a dumping site in a location away from the village as can be seen in the left foreground of the replica village below.
How were they able to do this? They were able to do so by studying the growth line of the outer shell layers.
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