Black Butte, Utah - 7.5 Minute Series Topo Map HUMBOLDT Explore the legendary Porcupine Rim

Explore the legendary Porcupine Rim

The signature Classic style map uses a bright

The two members are separated by the Mahogany oil shale

sample type

developed an interest in rocks at an early age

Black Butte, Utah - 7.5 Minute Series Topo Map HUMBOLDT Explore the legendary Porcupine RimThe 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