Wyoming

Wyoming

Sinks Canyon State Park

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Established
1971
Acreage
600 · ~600 acres along the Middle Fork of the Popo Agie River
Location
Fremont County, WY ~6 miles southwest of Lander (Wind River Range)
Key features
"The Sinks" — where the Popo Agie River disappears into a limestone cave — and "The Rise," where it reappears 1/4 mile downstream; Popo Agie River canyon; visitor center; designated International Dark Sky Park
Activities
Hiking, fishing (rainbow trout in the Rise pool), rock climbing, mountain biking, camping, stargazing, wildlife viewing
Notable
The Popo Agie River literally vanishes into a cave and reemerges 1/4 mile downstream; dye tests show the water takes more than 2 hours to cover that short distance

Visits

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Source: en.wikipedia.org · 2026-05-08