Mount Wilson, Colorado - 7.5 Minute Series Topo Map SH-17B By: Charles Kelly

By: Charles Kelly

Geologic issues involved in siting a high-level nuclear waste repository

• TruArc™ Global Needle tilts up to 20˚ for balanced use worldwide

and dozens of celebrated National Monuments

Mount Wilson, Colorado - 7.5 Minute Series Topo Map SH-17B By: Charles KellyThe 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