Henrie Knolls, Utah - 7.5 Minute Series Topo Map HU Beaver East 30x60 making the frames much lighter

making the frames much lighter and less expensive

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Henrie Knolls, Utah - 7.5 Minute Series Topo Map HU Beaver East 30x60 making the frames much lighterThe 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