Spring Bay Sw, Utah - 7.5 Minute Series Topo Map SH-4A The San Rafael Swell is

The San Rafael Swell is an anticline

With Stan Tekiela’s famous bird guide

These studies provide critical information on earthquake timing

It’s a great big wonderful world out there—so big that most young hikers

Spring Bay Sw, Utah - 7.5 Minute Series Topo Map SH-4A The San Rafael Swell isThe 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