It got bad at times, nothing but candles and an oil lamp in a motor home to survive in sub zero. Snowed in, no power, no propane, no running water, no contact with outside world, everything frozen inside and out except the condensation dripping on your bedding. Hauling any supplies in on a sled and trekking though snow up to your waist.

I would have been better off in a hand built stick shelter with a wood fire pit.