Tonopah, Nevada - 30x60 Minute USGS Topographic Map Stratigraphy Its scenic vistas

Its scenic vistas

Locate the hidden gems of Erickson Basin and explore the remote reaches of the Red Hole

notched log ladders

Pages: 430 p

Get there with the new National Geographic Road Atlas: Adventure Edition

Tonopah, Nevada - 30x60 Minute USGS Topographic Map Stratigraphy Its scenic vistasThe 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