I.
They arrive in Iceland in near-darkness concealing a dense, freezing fog that gives way to low clouds once outside of Reykjavik. It's a long drive to the tiny village of Laugarvatn, 70 miles in the blackness, and when they finally reach the place they're spending the night (to call it a hotel would imply there are more than six rooms), they're too tired to do more than kick their shoes off before falling into bed.
The next morning isn't much of a morning; it's lightening by the time Crowley is conscious enough to get out of bed with some prompting from the angel, fully daylight after he gets through the shower, and it doesn't take much longer than that to get the lay of the land. The town has 300 people, a post office, grocery store, restaurant, and not much tourism in the winter. It's hard to stay under the radar in such a place, so the few hours of daylight are spent asking quietly for the best sites to see the aurora and watching the cloudy skies, tense and dark. The sun, never far above the horizon, sinks slowly into a hesitant twilight. And then it's time to go.
The jeep-shaped vehicle they borrow from the nice gentleman at the (surprisingly open) tourist office bumps along over patches of rock and ice and who knows what else; Aziraphael is less than comfortable with what they might be rolling over with 'adventure' style suspension and no visible road. The headlamps illuminate a small patch of sameness directly in front, and the rest of the world around them is an unknowable black. All the ground that he can see is a grayish white dotted with darker patches of jutting rock. The heat blasting in the vehicle is just short of oppressive, but Crowley's face behind the wheel is grim and uncomfortable. Aziraphael tries moving one hand to the edge of Crowley's seat so that the side of his finger brushes the material of the demon's trousers, but he can't tell whether Crowley actually notices.
"I think the clouds might be lightening up," he says encouragingly. "I'm almost certain I saw a star or two over there."