A bushcraft trick is to dig a shallow trench, build a fire in it. When you’ve got coals, cover them over with dirt and sleep on top of that. I’d bet that goes back a looooong way.
Probably better to use hot rocks unless you’ve got good ventilation, otherwise carbon monoxide poisoning
I feel like being outside would blow away the small amounts of CO produced by coals (instead of an active fire).
Depends on how you build your shelter, really.
CO is a product of incomplete combustion. Specifically, it is created by ventilation limited partial combustion (i.e. not enough oxygen to make CO2).
So, coals would actually make a lot more CO than a roaring fire would.
Don’t put rocks near fire, especially wet rocks, they can explode
edit: I love that there’s some crying piss-ass following me and downvoting all my stuff. Whatever I said to hurt your feelings: GOOD!
I was being pretty stupid once and heated up a rock with a blow torch. The thing was glowing red and was super hot. I’m honestly surprised it didn’t explode…
The BIG sleep.
A year or two ago the YouTube channel primitive technologies did a video where he built under floor heating for his hut with an outdoor fire. It reminded me of how the Romans heated their floors.
I’ve got some bad news for you…
That video came out 9 years ago.
I immediately thought of Roman hypocausts, but apparently this sort of thing was done in Asia and North America thousands of years earlier. Who knew?
Now that’s a stupid luxury. And a maintenance nightmare should it ever fail. Reminds me of:
The American government spent millions of dollars engineering a pen that writes in zero gravity. The Russians brought pencils.
Pencil lead is conductive and would leave shards that would float into the controls.
That fable (it’s not real) is for people who don’t think one step past a witty saying.
That is an urban legend, Paul Fisher invented the pen which can write in space or underwater, without any government funding then sold it to NASA. The lauded cheap pencil is a fire hazard from wood shavings and the graphite dust floating in zero G can ruin equipment, which is why the Russians bought several of those pens about 5 years after NASA put them into use.
