Sanganji Shell Mound
Two excavations in 1952 and 1954 unearthed more than one hundred buried human remains, indicating that people had lived here during the Late Jomon to Final Jomon period.
The human remains were buried with the head of the deceased facing the mountain, and some were buried in a circular formation with the heads gathered together.
Based on the buried bones, the average life span is estimated to have been 29.2 years for men and 31.1 years for women.
DNA analysis of the human remains excavated from the Sanganji Shell Mound has produced results that differ from the previous ancestors of the Japanese people.