This looks straight out of Man Vs Wild. Here’s a lesson on how to make your own green shelter called bivouac just in case you find yourself lost in some dense jungle. First of all, look out for an angularly fallen tree and then position branches of appropriate lengths along the tree in a manner that you have enough space to fit into the shelter also protect yourself against the elements. It would be better if you find fir branches, as these would get wet less just in case it poured. You can also make a stove bench from the same fir twigs.