Soda Springs, Idaho - 7.5 Minute Series Topo Map SH-4B From canyoneering in Zion National

From canyoneering in Zion National Park and scrambling in Red Rock Canyon to hiking the highest peaks in Arizona

Basin configuration of the Virgin River depression

Fault-Derived Conduit and Barrier Groundwater Flow at Sawyer Spring

this map is your key to unlocking the secrets of this extraordinary wilderness

Soda Springs, Idaho - 7.5 Minute Series Topo Map SH-4B From canyoneering in Zion NationalThe 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