River Styx

River Styx
Painting of the Redrock Canyon of the Shoshone - from above the Demaris Hotsprings.

"John Colter originally named the river the Stinking Water when he encountered the strong odor of sulfur at a thermal area on the river near present day Cody. The Wyoming legislature, in 1902, changed the name to Shoshone at the request of area residents who wanted a more positive name for the river."