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Dig pit water collection
Dig a basin-shaped deep hole in the depression, place a vessel at the center of the pit to collect the water source, cover the surface with a plastic film, and fix the stone on both sides of the ground. Place a small stone in the center of the plastic film to make the center of the plastic film slightly. Hang down. In this way, as the time goes by, the temperature in the pit increases, and vaporization produces water vapor. The water vapor collides with the plastic film to form water droplets and slides down to the vessels in the pit. This approach is particularly suitable for deserts or other areas where there is a large temperature difference.
Drill fire
A V-shaped opening is cut into the edge of a hardwood board, and a corresponding V-shaped shallow groove fire is drilled on the corresponding ground. A small hole was cut shortly into the V-shaped opening on the board, and a hollow, softer tree stem with soft wood pulp was used as a weaver. The fine ends of the spinning wood were held in a small hole with two palms. Instinctively, it is continuously forced to gradually drill down deep. Friction heats the spinning eucalyptus wood and ignites the fire with gentle air blowing.
Hanging needle guide
A piece of iron wire or needle repeatedly rubbing with the same direction and silk, will produce magnetic, suspended with a thin line can indicate the direction. However, the direction measured by this method must be referenced to the direction from which the sun-shading observation is made. This simple magnetic compass does not last long, and you need to rub again to increase magnetism at intervals.
There are many factors for successful escape from wild adventures. The key to obtaining water, fire, and direction is the key. There are many specific methods.