Strong, Utah - 7.5 Minute Series Topo Map Utah Photographs explore prehistoric rock art at

explore prehistoric rock art at the San Rafael Swell

Marsh Peak

and backpacking trips for all levels

• Driving directions from nearest major town or junction

Geology Underfoot in Northern Arizona introduces you to a land of contrasts

Strong, Utah - 7.5 Minute Series Topo Map Utah Photographs explore prehistoric rock art atThe 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