[Deep in the woods of the Pacific Northwest, a community of Druids is reviving Celtic rites. They might seem hokey or outlandish, but maybe, just maybe, they’re the ones who have it all figured out.] The priest raises his arms, palms upturned. “Lord Taranis, hear our prayer!” he bellows, voice bouncing off the stone pillars and into the darkening fields beyond. The fire’s crackle fills the stone circle. We stare through the flames, past the boundary of our sacred space, to the patina of white looming over the white sky – Mount Adams, close and huge. It is high summer,...