BASIC LAND NAVIGATION PART 1 BASIC LAND NAVIGATION MODULE 5 The Topographic Map –Information Terrain Relief Module 5 Terrain ReliefPART 1 Basic Land Navigation

CONTOUR LINES –Knowledge of the relief of an area is extremely important to a wilderness navigator. The most graphic technique ever devised to show relief information is the contour line. –If you were to walk a contour line you would never go down hill and never up hill, and eventually you would arrive back where you started. Module 5 Terrain ReliefPART 1 Basic Land Navigation

CONTOUR LINES Contour Interval ~ The contour interval is the distance between each contour line. The contour interval is found along the bottom edge, center of the map. Intermediate Contour ~ a brown line on a topographic map and represents a line of equal elevation. Index Contour ~ a bolder/wider brown line that has the elevation value marked at various intervals as a part of the line. Example: contour is 20 feet interval A=700 ft B=740 ft C=770 ft D=820 ft Module 5 Terrain ReliefPART 1 Basic Land Navigation

What a Topo map and actual Land features show Map Information – Identification Module 6 Map InformationPART 1 Basic Land Navigation

Can you see it?

Terrain Features Module 5 Terrain ReliefPART 1 Basic Land Navigation

RIDGE Module 5 Terrain ReliefPART 1 Basic Land Navigation

Some Typical Terrain Features

HILL Module 5 Terrain ReliefPART 1 Basic Land Navigation

SADDLESADDLE Module 5 Terrain ReliefPART 1 Basic Land Navigation a. A saddle-shaped depression in the ridge of a hill.

VALLEY Module 5 Terrain ReliefPART 1 Basic Land Navigation

DEPRESSION Module 5 Terrain ReliefPART 1 Basic Land Navigation

CLIFF or ESCARPMENT Module 5 Terrain ReliefPART 1 Basic Land Navigation

Terrain Features Module 5 Terrain ReliefPART 1 Basic Land Navigation