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Within the canyon, massive sandstone cliffs tower above three distinct habitats, including a pine-covered north-facing slope, a juniper-sagebrush south-facing slope and an extensive riparian ecosystem.
Sinks Canyon State Park, six miles southwest of Lander on Highway 131, 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. 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 also 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.