This shelter design starts with a framework that lifts the bed 12-18” off the ground to prevent the cold earth from sucking every ounce of heat from your body.Once the “walls” are up, it’s time for a few cross-support beams. These are simply two or three 1-2” sturdy limbs placed between the walls. These can be moved forwards and backwards for comfort later. It might be helpful to place one behind your knees and one on your lower back.