The San Bernardino National Forest
is a United States National Forest in Southern California encompassing 823,816 acres (3,333.87 km2
) of which 677,982 acres (2,743.70 km2
) are federal. The forest is made up of two main divisions, the eastern portion of the San Gabriel Mountains and the San Bernardino Mountains on the easternmost of the Transverse Ranges, and the San Jacinto and Santa Rosa Mountains on the northernmost of the Peninsular Ranges. Elevations range from 2,000 to 11,499 feet. The forest includes seven wilderness areas: San Gorgonio, Cucamonga, San Jacinto, South Fork, Santa Rosa, Cahuilla Mountain and Bighorn Mountain. Forest headquarters are located in the city of San Bernardino. There are district offices in Lytle Creek, Idyllwild, and Fawnskin.