Expedition Island, located in the center of Green River, is a National HistoricalSite. The site is the recognized starting point for two expeditions down the Green and Colorado Rivers led by Major John Wesley Powell in 1869 and 1871. Powell began both trips near Expedition Island and mapped the river system, successfully finding the Grand Canyon.
It’s generally considered, that on these expeditions Powell completed the exploration of the last, large, unknown land area in the continental United States.
Expedition Island Today
Chances are if you’re looking for an enjoyable stroll, you’ll like the path that encircles the island. If it’s an evening walk you’re looking for, the paved pathway is also lighted for your safety and convenience. Easy parking access to the river can be gained next door at Splash Park. The island is comfortably shaded and features plenty of picnic tables and picnic shelters. Playground equipment, restrooms, as well as access to the Green Belt Nature Walk can also be discover on what was once the staging point for Major John Wesley Powell’s expeditions down the Green and Colorado rivers in 1869 and 1871.
The island has been the home for events such as River Festival, Art On the Green, and for many years now, Flaming Gorge Days.
Adventure Itinerary
Whether visiting for a week or just passing through, there are enough exciting opportunities to keep you occupied for years to come.
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National High School
Finals Rodeo
Rock Springs, WY
July 15-21, 2012



