Sinks Canyon is an incredible natural feature at the base of the southern Wind River Mountains in Wyoming. The Popo Agie River vanishes underground near the mouth of the canyon and reappears in a trout-filled pool about half a mile down the canyon! There are many different hiking trails at Sinks Canyon State Park where diverse birds and wildlife can be seen. The Middle Fork of the Popo Agie River is a great fishing spot, and Sink’s Canyon’s huge cliff faces are some of Wyoming’s best climbing areas. Children can join the Sinks Canyon Junior Ranger Program where they answer questions in a booklet and earn a ranger badge once they complete it.