Heppner, Oregon - 30x60 Minute Series Topo Map Utah Trails Series Christina J Stenten

Christina J Stenten

and realize why a Bonneville Salt Flats speed record is an internationally respected pedigree

By: Robert J

and Tatshenshini Alsek Park

Heppner, Oregon - 30x60 Minute Series Topo Map Utah Trails Series Christina J StentenThe 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