Sinks Canyon State Park features a geologic phenomenon in which the Popo Agie River vanishes into a large cavern (the Sinks) but reappears in a trout- filled pool, the Rise, about half a mile down the canyon. These trout live a leisurely life, with no fishing allowed. A visitor center features wildlife and recreation exhibits, viewing sites and interpretive signs about wildlife and habitat requirements. The park contains hiking trails and offers camping, picnicking, rock climbing and fishing. Sinks Canyon is home to a wide variety of wildlife, birds and plants. Visitors might see porcupines, black bears, red squirrels, bighorn sheep, mule deer, moose or golden eagles.