To build a stone rocket stove, you will need the following: stones, wood, a tender pile, and lighter (or something to start a fire) Gather large stones. A fire pit is useful. Make a base with the large stones. Place 2 parallel. Then, close the ends, by placing stones around it. This will give you a firebox. Make sure that you leave space to allow air to flow in. You'll be able to place a large stone on top and a pot on top of it. Start a fire in your firebox. Slowly add fuel: i.e. sticks. Place a stone on top. Continue adding fuel. Now, you can use it for cooking/boiling water.