If you cant cook or you just need to bake something it is very easy and simple to make a oven in the so called "wilderness", to begin(this is for ones who don't know how)- You will need some kind of saw,hatchet, or axe that you know how to cut decently with. Ok find a spot that is by mud but get sunlight( you might want to move mud to a different location if possible ). Take your cutting tool and find thin-like branches or tree sprouts that are 'bendy' and cut them to a 3-5 foot height; depending on your ideal size of stove. Now cut a pretty flat plank from a old tree stump maybe or something that will act as the base of the oven where you will place food on!! Put it down where you want to make the stove at and grab your 'bendy' branches and drive one end around the base about 4-5 inches or until its secure enough, then do the same to the other end of the branch and continue to do with all of them to form the foundation of your oven. After that get your mud and build around your foundation design to give it a structure(be careful you don't collapse it all). After that let the sun dry it out for a while and make sure to add an opening or two so the oven has enough room for coals to burn in the back somewhere(circumference about a inch) , then make a door to fit the front of the oven to keep the heat in. You are basically good to go but I did not go into too much detail but I hope you get the idea. I know that there are several different ways to make a oven/stove out of pretty much nothing but nature but this is only one.