Montoya Butte, New Mexico - 7.5 Minute Series Topo Map SH-4G while lighter shades highlight the

while lighter shades highlight the higher altitudes

navigating diverse terrains

This publication

including ages of surface displacements and volcanism

the natural forces that shaped its landscapes

Montoya Butte, New Mexico - 7.5 Minute Series Topo Map SH-4G while lighter shades highlight theThe 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