>>831913Holy shit, that's my garden trowel!
>>832046Depends on soil type. In loose soil you may need to dig a trench and place a stone then cover it with soil. In wet soils, where water pools in the hole, you build a small chimney up from the ground to make a soil rocket stove. You won't be able to do it in extremely sandy soils or sand unless you have a fire resistant binder for the sand. The soil in that image is hard dry clay. It will remain as a 5 feet tall vertical wall for most of a summer until excess rain finally gets to it.