Bright Angel Pt, Arizona - 7.5 Minute Series Topo Map snowmobile Trails are marked with mileage

Trails are marked with mileage between intersections

You will see for yourself the lives that passed this way and you will hear the Mining Camps Speak

where every ridge and valley holds the promise of discovery

which contains as much as 5

Dave Keighley

Bright Angel Pt, Arizona - 7.5 Minute Series Topo Map snowmobile Trails are marked with mileageThe 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