Santa Ana Mountains History, Habitat & Hikes: On the Slopes of Old Saddleback and Beyond - Hardcoverby Patrick Mitchell (Author) The majestic Santa Ana Mountains cover one thousand square miles and much of the Cleveland National Forest in Orange, Riverside and San Diego Counties. Unlike other designated wild lands close to huge population centers, the rugged Santa Anas remain largely primordial. Dominated by Old Saddleback and its twin peaks of Modjeska and Santiago, this beautiful range, visible from much of the Los Angeles Basin, remains the last