If you have ever wanted to learn about the geology of Idaho, this site is a great way to explore everything from Coeur d'Alene to the Sawtooth Mountains. This digital version of a course offered at Idaho State University systematically divides Idaho geology into a set of different teaching modules. The modules cover topics like the Idaho Batholith, the Columbia River Basalts, and the Lake Bonneville Flood. Each module contains maps, charts, diagrams, and photographs that illuminate the various geological processes that have formed, and continue to form, in each region of the state. Many of the modules also have fly-throughs that superimpose color-coded geology on 3-D topographic maps to provide a graphic visualization Idaho's rivers. Additionally, the site contains slide shows and a set of teaching exercises.