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Barnenez

A giant Breton cairn with eleven passage graves; one of Europe's oldest megalithic monuments and man-made structures.

Dated events and their evidence

• 4,800 BCE mainstream
  first cairn built source
• 4,300 BCE mainstream
  second cairn added source

Where

48.6675° N, 3.8586° W

Sources

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

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