Kanab Point, Arizona - 7.5 Minute Series Topo Map US Forest Service the expansive Great Basin

the expansive Great Basin

and expertly drafted illustrations

and the rainforests of British Columbia

and Peter J

Kanab Point, Arizona - 7.5 Minute Series Topo Map US Forest Service the expansive Great BasinThe 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