West Rim Trail, Zion Canyon Professional Review and Guide
"The diversity of this hike, combined with the magnificent views of Zion Canyon from the West Rim, make it one of the most enjoyable trails in the park. Horse Pasture Plateau, where the trail begins, is a long flat finger of sandstone that protrudes from the Kolob Plateau, on the northern park boundary, into Zion Canyon.
The path meanders gently downward through the ponderosa pine and pinon-juniper forests of the plateau, dropping 740 feet over a distance of nine miles, before descending abruptly into the canyon. Spectacular views from the West Rim begin about six miles from the trailhead, where the route skirts the edge of Phantom Valley, and climax 3.5 miles later at Cabin Spring. Beyond Cabin Spring the trail drops into Zion Canyon and winds through another 4.7 miles of slickrock and canyon country before reaching the North Fork of the Virgin River."