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Identify Terrain Features On A Map

 

CONDITIONS
Given a standard 1:50,000?scale military map.

STANDARDS
Identify the five major and three minor terrain features on the map.

TRAINING AND EVALUATION
Training Information Outline
1. Identify major terrain features.

a. Terrain features are identified in the same manner on all maps, regardless of the contour interval, but you must realize that a hill in the Rocky Mountains will be much bigger than one in south Florida. You must be able to recognize all the terrain features to locate a point on the ground or to navigate from one point to another.

b. Terrain features can be learned using the fist or hand to show what each would look like on the ground (Figures 5-8 and 5-9).

Figure 5-8. Using the fist to explain terrain features.

Figure 5-9. Using the hand to explain terrain features.

c. The five major terrain features on a map are-

(1) Hill-a point or small area of high ground. When you are on a hilltop, the ground slopes down in all directions (Figure 5?10).

Figure 5-10. A hill.

(2) Ridge-a line of high ground with height variations along its crest. The ridge is not simply a line of hills; all points of the ridge crest are higher than the ground on both sides of the ridge (Figure 5-11).

Figure 5-11. A ridge.

(3) Valley-reasonably level ground bordered on the sides by higher ground. A valley may or may not contain a stream course. A valley generally has maneuver room within its confines. Contour lines indicating a valley are U-shaped and tend to parallel a stream before crossing it. The course of the contour line crossing the stream always points upstream (Figure 5?12).
 

Figure 5-12. A valley.

Figure 5-13.Saddle.

(4) Saddle-a dip or low point along the crest of a ridge. A saddle is not necessarily the lower ground between two hilltops; it may be a break along an otherwise level ridge crest (Figure 5-13).
(5) Depression-a low point or hole in the ground, surrounded on all sides by higher ground (Figure 5-14).

Figure 5-14. A depression.

2. Identify minor terrain features. Although these features are not as important as the major terrain features, navigators can plan routes more successfully if they can identify all the terrain features their routes will cross over.

a. Draw-similar to a valley, except that it normally is a less developed stream course in which there is generally no level ground and, therefore, little or no maneuver room (Figure 5-15). The ground slopes upward on each side and toward the head of the draw.

Figure 5-15. A draw.

Draws are caused by flash floods and can be found on flat terrain but are more often found along the sides of ridges. Contour lines indicating a draw are shaped like a “V” with the point of the “V” toward the head of the draw (high ground).

b. Spur-a usually short, continuously sloping line of higher ground, normally jutting out from the side of a ridge. A spur is often formed by two thoroughly parallel streams cutting draws down the side of a ridge (Figure 5?16).

c. Cliff-a vertical or near-vertical slope. A cliff may be shown on a map by contour lines being .

Figure 5-16. A spur.

close together, touching, or by a ticked “carrying” contour line. The ticks always point toward lower ground (Figure 5-17).

Figure 5-17. A cliff.

Evaluation Guide:
Identify Terrain Features on a Map

Performance Measures
1. Identify the five major terrain features on a map

2. Identify the three minor terrain features on a map


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