In between the breaks in heat & rain, I finally built a little stove. Pretty crappy and there are definitely a bunch of things I would do different but whatever. It is done. Glad I used the sand. The ground isn't level (need more sand) and the bricks got really hot. It was pretty cool how the fire was drafted to the back of the tunnel. A couple times I did hear a whoosh sound. Cooked a piece of chicken before the rain came down too hard.