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Iwajuku Site

Gunma Prefecture site whose 1949 excavation first proved a pre-Jomon Palaeolithic presence in Japan, with stone tools in dated layers.

Dated events and their evidence

• 25,000 BCE mainstream
  Iwajuku I stone tool layer, dated to about 27,000 years ago source
• 18,000 BCE mainstream
  Iwajuku II stone tool layer, dated to about 20,000 years ago source

Where

36.4001° N, 139.2875° E

Sources

• https://en.wikipedia.org/wiki/Iwajuku_Site

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