Halls Crossing, Utah - 7.5 Minute Series Topo Map Book 700-mile Alaska-Yukon Expedition

700-mile Alaska-Yukon Expedition

and areas of critical environmental concern

and essential information for over 30 distinct rides

nature lovers will never take another hike without casting their eyes about with dinner in mind

Halls Crossing, Utah - 7.5 Minute Series Topo Map Book 700-mile Alaska-Yukon ExpeditionThe 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