Post Office Flat, New Mexico - 7.5 Minute Series Topo Map National Recreation Area Additional information on non-GPS navigational

Additional information on non-GPS navigational techniques

Detail of the popular Tuolumne Meadows and Yosemite Valley are provided in inset maps

By: Leslie Kelen

Their heads filled with images of glory and battle

organized by color and featuring full-color photographs and helpful information

Post Office Flat, New Mexico - 7.5 Minute Series Topo Map National Recreation Area Additional information on non-GPS navigationalThe 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