# County County Seat University Location 1 Ada Boise Physical Science Building 2 Adams Council Beckley Nursing Building 3 Bannock Pocatello Administration Building 4 Bear Lake Paris Public Safety Building 5 Benewah St. Maries Holt Arena 6 Bingham Blackfoot Graveley Hall 7 Blaine Hailey College of Engineering 8 Boise Idaho City Turner-Garrison Complex 9 Bonner Sandpoint Holt Arena 10 Bonneville Idaho Falls Hypostyle 11 Boundary Bonners Ferry Holt Arena 12 Butte Arco Reed Recreation Complex 13 Camas Fairfield Vocational Arts Building 14 Canyon Caldwell Colonial Hall 15 Caribou Soda Springs Plant Services Building 16 Cassia Burley Liberal Arts Building 17 Clark Dubois Reed Recreation Complex 18 Clearwater Orofino Turner-Garrison Complex 19 Custer Challis Industrial Crafts Building 20 Elmore Mountain Home Physical Sciences Building 21 Franklin Preston Fine Arts Building 22 Fremont St. Anthony Red Hill Building Map of the County Rock Locations Information about the County Rocks

# County County Seat University Location 23 Gem Emmett Turner-Garrison Complex 24 Gooding Gooding Trade and Technology Building 25 Idaho Grangeville College of Education 26 Jefferson Rigby Student Health Center 27 Jerome Jerome Library 28 Kootenai Coeur d'Alene Holt Arena 29 Latah Moscow Holt Arena 30 Lemhi Salmon College of Education 31 Lewis Nez Perce Speech Pathology Building 32 Lincoln Shoshone Library 33 Madison Rexburg Student Union 34 Minidoka Rupert Library 35 Nez Perce Lewiston Lecture Center 36 Oneida Malad City College of Pharmacy 37 Owyhee Murphy Frazier Hall 38 Payette Payette Roy F. Christensen Building 39 Power American Falls Dental Arts Building 40 Shoshone Wallace Plant Sciences Building 41 Teton Driggs Early Learning Center 42 Twin Falls Twin Falls Business Administration Bldg. 43 Valley Cascade Gale Life Science Complex 44 Washington Weiser Gale Life Science Complex

Rocks from all 44 Idaho counties are matched with buildings on the ISU campus in their approximate geographic orientation within Idaho. Each county donated a rock for the rock walk. These rocks are mounted on standardized circular bases, which are placed at buildings across campus. Each rock has a plaque, with information about the Rock and its place in Idaho history.

The Idaho Geologic Campus

This project is unique in the United States. With the construction of the Centennial Rock Walk, Idaho State University has the only State Geologic Campus in the U.S.A.

Teaching Tool

The rocks and map information are used in ISU geography and geology classes. Locations of counties can be taught "on the ground" to students (i.e. to get from Bannock County to Bear Lake County, one goes southeast from the Administration Building to the Public Safety Building).

Home Base on ISU Campus

Visiting field trips from Idaho schools can find the map on the Web, then come to campus and locate their county's rock. Each Idaho citizen has a rock from their home county on the ISU campus.

Geology of Idaho

Idaho's geology is varied and is directly related to its history and economy.

The Idaho Batholith, a composite body of granitic rock in central Idaho, has formed a barrier to transportation that isolates northern Idaho from southern Idaho. Rich silver and lead ores in the Silver Valley along the Coeur d'Alene River in northern Idaho fueled the wealth of the Inland Empire in the late 1800s.

The irrigated Snake River Plain is underlain by volcanic rock, erupted in the last 15 million years. Rich soils derived from these volcanics grow Idaho's famous potatoes. The complexly folded sedimentary rocks of southeast Idaho are home to rich phosphate deposits near Soda Springs. Most important for population growth in the 21st century, Idaho's complex and youthful geology provides scenic beauty and environmental amenities, which are sought by new residents of our beautiful state.