SAN GABRIEL MOUNTAINS

segment of the Pacific Coast Ranges, extending eastward for about 60 miles (100 km) from Newhall Pass, north of San Fernando, to Cajon Pass in southern California, U.S. Many peaks in the San Gabriel chain exceed 9,000 feet (2,700 m), including the twin peaks of North Baldy (9,131 feet) and Mount Baden-Powell (9,389 feet), about 65 miles (105 km) northeast of Los Angeles, and Mount San Antonio, or Old Baldy (10,080 feet), the highest point. The range also includes Mount Wilson (5,710 feet), with its famous astronomical observatory, just northeast of Pasadena; favourable weather allows its use for about 300 days a year. The mountains are largely within the Angeles National Forest. The southern foothills, which enter residential and agricultural communities of Los Angeles and San Bernardino counties, are noted for citrus-fruit production.