Clayton, New Mexico - 30x60 Minute USGS Topographic Map 20%Sale Expertly researched and created in

Expertly researched and created in cooperation with the National Park Service and others

and long winding drives through the mountains

National Parks and Monuments

presents the definitive account of one of the most momentous journeys in American history

number of earthquakes

Clayton, New Mexico - 30x60 Minute USGS Topographic Map 20%Sale Expertly researched and created inThe 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