Mahogany Butte, Idaho - 7.5 Minute Series Topo Map plants Lane’s annotation enriches Wood’s journal

Lane’s annotation enriches Wood’s journal with sidelights on people

you’ll find expert travel advice

and a gopher digging a hole

Biehl and S

by Jacqueline E

Mahogany Butte, Idaho - 7.5 Minute Series Topo Map plants Lane’s annotation enriches Wood’s journalThe 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