The campervan heater was blasting at full power, straining to keep pace with the winds outside that brought the temperature to well below freezing. With my thermal base layers on, I burrowed deeper into my sleeping bag, trying to find comfort in what felt like a mobile ice box parked in the snowiest place on Earth.
The rental company worker’s warning about the heating vent kept cycling through my mind: “Keep it clear of snow, or you’ll have a carbon monoxide problem,” she’d said cheerfully, pointing at the outlet barely a foot off the ground. Here in Hokkaido, Japan, getting more than two feet of snow overnight isn’t just possible – it’s routine. That’s why I’d set my alarm for the middle of the night to check the exhaust vent. But I kept jerking awake before it went off, filled with visions of my van slowly disappearing beneath a snowdrift.