Trout Creek Butte, Oregon - 7.5 Minute Series Topo Map climbing Fortification Hill

Fortification Hill

The image of the intrepid young rider on a fast horse

Sheep and cattle farmers

easy-to-follow style

a dedicated hiker yearning for panoramic vistas

Trout Creek Butte, Oregon - 7.5 Minute Series Topo Map climbing Fortification HillThe distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes