I've recently been reading another manual with a section on snow shelters, which has the standard (?) 'make a trench for the cold air' advice. This will be pedantry, but I want to make sure that I understand what's meant. Although I've made a variety of snow shelters (kids are a great excuse), I've yet to spend a full night in one; and am looking for a clarification from someone with experience.
Where does this cold air come from ? Wasn't it there to start with ?
I understand the need to have a low entrance, sheltered from drafts; but are you not actually making sure that you're close to any warm air that you create ?
In two otherwise identical shelters, is it better to add a trench to aid some form of stratification, or to minimise the volume to be heated ?
Where does this cold air come from ? Wasn't it there to start with ?
I understand the need to have a low entrance, sheltered from drafts; but are you not actually making sure that you're close to any warm air that you create ?
In two otherwise identical shelters, is it better to add a trench to aid some form of stratification, or to minimise the volume to be heated ?