In Spokane, visit the Cheney Cowles Museum. Recognized as one of the best in Eastern Washington, it includes exhibits on the Plateau Indians, the fur trade, early exploration and settlement of Spokane, and the Inland Northwest. Thundering Spokane Falls can be viewed from several bridges as well as a gondola.
Visitors can take jet boat excursions up the Snake River to view geological wonders.
Overnight Mountain Home. Overnight Idaho Falls. Idaho Falls to Thermopolis Travel through Bridger-Teton National Forest to Riverton then north toward Thermopolis. The winding highway takes you through the history of the earth carved out by the Wind River and other geological forces. In Laramie, the University of Wyoming Geological Museum features local physical and historical geology, spanning the past two billion years.