Billies Mountain, Utah - 7.5 Minute Series Topo Map shaded relief and which gems are the

and which gems are the rarest in the world

By: Ron Harris

Willett and J

the ancient seabed remnants in the Bonneville Salt Flats

Helpful information about regulations and wilderness safety is included to help ensure your visit is safe and enjoyable

Billies Mountain, Utah - 7.5 Minute Series Topo Map shaded relief and which gems are theThe 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