I've tried this type of fire and I'am pretty disappointed. I had built a upside down fire and it lasted about 2 hours. But the amount of the wood used was enough to burn for 16h with normal fire. Just by adding small bits.
Second thing is that if you want to cook you have to re-arrange the fire anyway. So in my opinion it's highly ineffective.
Maybe they work good with great deal of large wood but do you have that kind of abudance when you're camping? And if you do you can use it for many days and not waste it on one upside down fire.
Just my opinion...
Second thing is that if you want to cook you have to re-arrange the fire anyway. So in my opinion it's highly ineffective.
Maybe they work good with great deal of large wood but do you have that kind of abudance when you're camping? And if you do you can use it for many days and not waste it on one upside down fire.
Just my opinion...