Mount Cramer, Idaho - 7.5 Minute Series Topo Map Grand Staircase-Escalante The cliffs of Porcupine Rim

The cliffs of Porcupine Rim are source areas for large rock falls which can travel far out onto the alluvial fans below the cliffs

and Hells Canyon - the deepest gorge in North America

Assessment of the Aquifer's Potential as a Saline Water Disposal Zone

Published: 1989

this map truly is the book of stone that tells the story of Utah's past

Mount Cramer, Idaho - 7.5 Minute Series Topo Map Grand Staircase-Escalante The cliffs of 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