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During a midday halt, if the sun is shining it is possible to secure an ample supply of water by melting on a tent section. The tent section or other waterproof cloth is spread out slightly concave or dish-shaped, draining on one side into a cup or pot. Snow is spread evenly and thinly over the entire surface by sprinkling, in much the same manner as sowing seeds. The heat of the sun is absorbed by the dark tent fabric and melts the snow. The process can be hastened if the tent section is laid on insulating material, such as grass, twigs or clothing. If insulated in this manner, and out of the wind, water can be secured even though the air temperature is as much as ten degrees below freezing. A flat rock with a hollow on the top will serve as a substitute for the waterproof cloth, and cannot harm the water. |
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