The incredible fog-scape is created by a process called cloud inversion. It happens when moisture condenses into fog and is held in place by warmer air resting on top of it. While it’s a rare occurrence, it did just happen in the Grand Canyon in December. It’s been a good few months for fog lovers.

Watch the time lapse again, but this time do it while listening to one of the more beautiful passages of literature, Gandalf telling Pippin about “the grey rain-curtain of this world,” from The Lord of the Rings. Sometimes reality can match the poetry of fantasy.

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