Mt Terrill, Utah - 7.5 Minute Series Topo Map Canyoneering By: Liz and Peter Welsh

By: Liz and Peter Welsh

A 10-page booklet summarizes the methods used to produce the map

unembellished narrative written by one who was not only a trapper but also a keen observer and an able writer

000 years ago

Shoshone National Forest

Mt Terrill, Utah - 7.5 Minute Series Topo Map Canyoneering By: Liz and Peter WelshThe 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