Kyros

Kyros is a desolate site of Endless history, once it was an eden to the ancient civilization, and its discovery lead to great importance in many of their last religions. Unfortunately one of those religions was the personality cult of Koli, a man whose power grew to threaten the other groups of the planet. Their premptive war against him caused the megalomaniac to destroy the planet with a nanomachine weapon (presumably not Dust) and his wife Hoce would become famous as part of a ghost story. The aftermath was for the Endless to adopt a policy of authoritarian atheism and environmentalism.