Explore the San Gabriel Mountains with This Authoritative Hiking Guide Escape the rapid-paced urban life of Southern California, and step into the open, rugged terrain of the San Gabriel Mountains. Here, amid forest, chaparral, and stream, you'll revitalize yourself in nature's unhurried environment. Visit Eaton Canyon Falls, the most popular waterfall in the Angeles National Forest. Enjoy a family-friendly hike to a historic fire lookout...