I was wondering if there were a simple and relatively quick way to make an oven in the field. I was wondering what a backpacker or bushcrafter might do since packing in a camp stove is almost certainly out of the question (for the uninitiated, a camp stove a.k.a. a Dutch oven is a large cast iron pot with a heavy, lipped lid upon which you place additional coals and is good for stews, baking bread, etc.). It occurred to me that given sufficient time, one could make a brick oven using natural clays, etc., but this isn’t very practical. Is there another way that, say, sourdough breads could be cooked in the field?