The Last Druid Standing: The Ring of Brodgar

Occasionally, Mother Earth realizes what a mess we have made of the planet. When this happens, there are mass extinction events that allow evolution to start over. Seventy-seven thousand years ago, a supervolcano in Sumatra, Indonesia, called Toba erupted. It is one of the earth's largest known explosive eruptions. This eruption caused a genetic bottleneck, nearly ending all human life on earth. The survivors should have been a small band of Druids and a nonhuman species called the Urus.

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