We learned this in survival training when I was in the Navy. The Dakota fire hole - conserves wood while minimizing smoke and light from the fire. it also helps cut the light and smoke that can be seen by others or, eh hem, Walkers.
How to make a datoka fire hole. One of the most efficient and useful ways to make a campfire for cooking. Burns super hot, saves wood, and not as smoky.
Dakota Fire Hole: Saves Wood, Burns HOT, Minimal Smoke & Efficient Cooking - Outdoor End camping tips (Primitive Camping Hacks)
This is brilliant! Summer beach party fire pit in style! When we have a fire on the beach, we need to do it right. We could get this done in no time if we all bring our snow shovels.
A simple leanto structure with a dakota fire pit a raised bed a roasting spit and 2 heat reflective walls. Just some of the things we get up to when the sun comes out. These creature comforts help massively when the sun goes down and the rain comes out in