Visualizing the three-dimensional Earth depicted on a flat piece of paper is often difficult for beginning map readers. This map, created by combining U.S. Geological Survey topographic maps with digitally produced hill-shading effects to simulate shadows cast on the surface, makes it much easier to visualize the terrain. Map 33" x 38"
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Indiana Geological and Water Survey
1001 E. 10th St.
Bloomington, IN 47405
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