>>2776900so the most basic is a rough lattice of branches interwoven randomly, with some foliage on top then dead leaves. you can make a nice comfy dome that way. was often made as a half-done, one side open, for a fire.
next is the classic teepee or tipi.
big long logs, resting up against each other , branches on top, hole in the middle at the top, fire in the middle.
having recently been somewhere with no trees but lots of rocks, can confirm that dry stone walling is tiring but do-able. add a tarp roof and plug any gaps with moss and it is an excellent shelter. the key is to lay the stones like this