As you walk through the Redwood forests of Northern California, you see the evidence of a natural process found in many forests: a tree dies, and around its stump shoots rise, and eventually become trees themselves, arranged in a circle around the “ghost” of the original tree.

The tree-worshipping cultural groups of Northern Europe prized these tree circles, and indeed wooden circles and stone circles are associated with the Celts, who through prehistory migrated right across Europe from its southeastern to northwestern corners, leaving wooden and stone circles in their wake. Continue Reading

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