Picacho Peak, Utah - 7.5 Minute Series Topo Map SAN RAFAEL SWELL principally stone and sand and

principally stone and sand and gravel have provided almost 75 percent of the cumulative mineral value produced in Box Elder County through 1974

STRUCTURAL GEOLOGY AND VOLCANISM

Utah's most popular hiking trails are generally located in her five national parks

Outstanding color photography

the special addresses

Picacho Peak, Utah - 7.5 Minute Series Topo Map SAN RAFAEL SWELL principally stone and sand andThe 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