I’ve published a few Fire Skills posts in the past to give readers a few options in making their evening camp fires. We’ve experimented with a few fire set-ups in order to see which ones last the longest. The set-up in this video from Sigma 3 Survival School is claimed to burn for 40 hours. That’s quite a claim.
Their technique is to build a pyramid fire (each layer’s tightly spaced logs are a little shorter, a little thinner, and laid perpendicularly on the logs underneath). Their winning tip is to pack the gaps between the logs with dirt or clay. If you do this for every level, the embers won’t be able to fall down and ignite lower levels of wood prematurely.
Even if it doesn’t last 40 hours, this looks like a good candidate for at least an all-night fire, something we’ve never been able to manage with previous campfires. Next time we’re going to give this a try.