Geological examination of the park canyonland, with description of the rocks, water sculping process, volcanic cones and outflows, and land erosion. This edition is Volume 2, 1977 reprint, of the author's 1882 monograph. Includes 12 color maps, 10 color views and is number 280/1500.

This study will review and evaluate the area's transportation system to enhance business opportunities, improve supply chain performance and reliability, and coordinate access to and from major employment centers, all of which will increase economic development potential and create lasting value for the area.