Sop Canyon, Utah - 7.5 Minute Series Topo Map Geochronology Etched on the Grand Canyon's

Etched on the Grand Canyon's steep walls are stories of how this majestic landscape came to be: stories of volcanic islands

reveal hidden springs

tips on everything from chicken keeping to community health

Scale: 1:150

biking and motorized vehicles

Sop Canyon, Utah - 7.5 Minute Series Topo Map Geochronology Etched on the Grand Canyon'sThe 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