Named for the Shoshone people who once held sway over this part of the Great Plains, the town of Shoshoni (pop. 648) now sits somewhat forlornly at the junction of US-20 and US-26, at the southeast edge of the Boysen Reservoir.

Between Shoshoni and Casper, the only attraction worth mentioning is the odd geology of Hell’s Half Acre, a more than 300-acre concentration of grotesquely eroded stone south of US-20 amid the arid badlands landscape. Scenes in the cult-classic late-1990s Neil Patrick Harris military sci-fi movie Starship Troopers were filmed here in 1996.