The Rocky Mountains have always posed a forbidding obstacle for travelers, but there’s one place where "God ran out of mountains," and passage is relatively easy. For generations, Indians, fur traders, missionaries, and explorers moved through South Pass, a treeless valley in southwestern Wyoming. It’s a place rich with history and extraordinary tales, and it's the focus of historian Will Bagley's latest book. He joins us Tuesday to explain how South Pass figured in the development of the American West.

This Thursday at 7 p.m., Will Bagley will be reading from and signing his new book, South Pass: Gateway to a Continent, at Ken Sanders Rare Books. DETAILS

Will Bagley is an independent historian and author of numerous books. His newest is South Pass: Gate to a Continent [Amazon|Indiebound]