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A storm may require a party to retreat in poor visibility, so it may be well to record distances traveled in each direction as well as compass bearings of prominent landmarks along the route. Then, knowing the bearing, locate a landmark as far away as visibility will permit, and proceed toward that landmark for the distance required. If the chosen landmark is likely to be obscured for any reason, an intermediate landmark should be chosen on the same line before the distant one is lost. Visibility may be so poor that no landmarks are seen. The last man in the party should then direct the travel by compass, sighting ahead on the other two men and thus maintaining a straight line. In turning to pass such an obstacle as a cliff or open stream, one can return to the original line by carefully recording the new angle of direction and the distance traveled. Easiest to use is a series of right angles. A shorter but slightly less accurate |
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