Some of the most dramatic slot canyons in the world have been carved into the White Cliffs of the Grand Staircase in southern Utah. Many of these slot canyons are accessible only to veteran canyoneers well versed in a variety of rock-climbing techniques.
Yet there are slot canyons that involve no more than a pleasant walk down their shadowed stone hallways. Willis Creek is such a canyon. Born on the flanks of the Pink Cliffs in Bryce Canyon National Park, the broad wash of Willis Creek carves a swath through densely wooded terraces until it reaches the Navajo Sandstone of the White Cliffs. There the wash seems to disappear, becoming entrenched between 200- to 300-foot slickrock walls. This gorge, with many narrow passages, stretches 2.5 miles down to its confluence with much larger Sheep Creek Canyon, another Pink Cliffs drainage.