Find Your Way in Southern California's Beautiful Hiking Region The San Gabriel Mountains lie between the Los Angeles Basin and the Mojave Desert. They encompass parts of the Angeles and San Bernardino national forests. Several hundred miles of trails crisscross the vast area. Discover the best of it all with this four-color topographic map. The large, beautifully detailed map is 38.25" x 18.75", and it contains all the details you need...