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Tent on Devils Backbone with ridges at sunrise. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Mount Wilson observatory, mountains, and Los Angeles Basin. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers and trees on Mt Baldy Devils Backbone ridge at dawn. San Gabriel Mountains National Monument, California, USA ( ) Yucca in bloom and San Antonio Creek at dusk. San Gabriel Mountains National Monument, California, USA ( ) Mount San Antonio's Devils Backbone ridge at sunrise. San Gabriel Mountains National Monument, California, USA ( ) Lower tiers of San Antonio Falls. San Gabriel Mountains National Monument, California, USA ( ) Desert shrubs, pine forests, and  Mount San Antonio from Vincent Gap. San Gabriel Mountains National Monument, California, USA ( ) Mount Baldy from Vincent Gap with agave in bloom. San Gabriel Mountains National Monument, California, USA ( ) Valley between Iron Mountain and Ross Mountain from Blue Ridge. San Gabriel Mountains National Monument, California, USA ( ) Snow-capped Mount Baldy from Inspiration Point. San Gabriel Mountains National Monument, California, USA ( ) Row of pine trees, Baldy Bowl. San Gabriel Mountains National Monument, California, USA ( ) Pine tree. San Gabriel Mountains National Monument, California, USA ( ) Yucca in East Fork San Gabriel River Canyon. San Gabriel Mountains National Monument, California, USA ( ) Trees with new leaves and shadows in deep East Fork San Gabriel River Canyon. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel River flowing in canyon with newly leafed trees. San Gabriel Mountains National Monument, California, USA ( ) East Fork San Gabriel River gorge with yuccas and trees. San Gabriel Mountains National Monument, California, USA ( ) Trees with new leaves along East Fork of San Gabriel River. San Gabriel Mountains National Monument, California, USA ( ) Boulders and pool, Lower Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Upper Switzer Falls in box canyon. San Gabriel Mountains National Monument, California, USA ( ) Bear Canyon at sunset. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Devils Punchbowl Formation. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers, Devils Punchbowl sandstone. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Devils Punchbowl tilted sandstone formation. San Gabriel Mountains National Monument, California, USA ( ) Light and shadows on mountains. San Gabriel Mountains National Monument, California, USA ( ) Rolling peaks under stormy sky. San Gabriel Mountains National Monument, California, USA (Panoramic ) Los Angeles Basin covered with sea of clouds from Mount Wilson, sunrise. San Gabriel Mountains National Monument, California, USA (Panoramic ) Ridges at sunset. San Gabriel Mountains National Monument, California, USA ( ) Los Angeles Basin at sunset. San Gabriel Mountains National Monument, California, USA ( ) Succulents and lights of Los Angeles at night from Mount Wilson. San Gabriel Mountains National Monument, California, USA ( ) Jackson Lake at sunset. San Gabriel Mountains National Monument, California, USA ( ) Mount San Antonio (Mount Baldy) rises above pine forest. San Gabriel Mountains National Monument, California, USA ( ) Mt Baldy from Blue Ridge. San Gabriel Mountains National Monument, California, USA ( ) Mt Baden Powell from Blue Ridge. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers, Mt Baldy, and Iron Mountain. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers and Rattlesnake Peak. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers and shrubs on Blue Ridge, Iron Mountain and Ross Mountain. San Gabriel Mountains National Monument, California, USA ( ) Agave in bloom, Pine Mountain, and Mount San Antonio. San Gabriel Mountains National Monument, California, USA ( ) Agaves in bloom, Pine Mountain, and Mount San Antonio from Vincent Gap. San Gabriel Mountains National Monument, California, USA ( ) Succulent and shurb. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers, burned trees, Waterman Mountain. San Gabriel Mountains National Monument, California, USA ( ) Shrubs in bloom and Strawberry Peak. San Gabriel Mountains National Monument, California, USA ( ) Looking towards the Mojave Desert from the crest. San Gabriel Mountains National Monument, California, USA ( ) Chaparal with wildflowers and burned trees. San Gabriel Mountains National Monument, California, USA ( ) Pine trees and ridges. San Gabriel Mountains National Monument, California, USA ( ) Rolling peaks with spot of light. San Gabriel Mountains National Monument, California, USA ( ) Blue ridges. San Gabriel Mountains National Monument, California, USA ( ) Valley ridges, looking west from crest. San Gabriel Mountains National Monument, California, USA ( ) Rolling peaks under storm sky with shaft of light. San Gabriel Mountains National Monument, California, USA ( ) Mountains above low clouds from Mount Wilson. San Gabriel Mountains National Monument, California, USA ( ) Forested mountains with Los Angeles Basin in the distance. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Mount Wilson Antenna farm. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Mount Wilson observatory. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of media transmitters on Mount Wilson. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Mount Wilson observatory at sunrise. San Gabriel Mountains National Monument, California, USA ( ) Mount Wilson antennas and Los Angeles with fog at sunrise. San Gabriel Mountains National Monument, California, USA ( ) Mountains and distant Los Angeles Basin at sunset. San Gabriel Mountains National Monument, California, USA ( ) Mountains and distant Los Angeles Basin at night. San Gabriel Mountains National Monument, California, USA ( ) Arroyo Seco flowing in lush riparian environment. San Gabriel Mountains National Monument, California, USA ( ) Arroyo Seco flowing in canyon. San Gabriel Mountains National Monument, California, USA ( ) Boulders and Lower Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Pool and Lower Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Ripples in pool below Lower Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Circular basin at the base of Lower Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Two-tiered Lower Switzer Falls flowing into basin. San Gabriel Mountains National Monument, California, USA ( ) Boulders and Lower Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Arroyo Seco cascade. San Gabriel Mountains National Monument, California, USA ( ) Lush Arroyo Seco canyon with ferns on walls. San Gabriel Mountains National Monument, California, USA ( ) Close-up of ferns on canyon wall. San Gabriel Mountains National Monument, California, USA ( ) Ferns on canyon wall. San Gabriel Mountains National Monument, California, USA ( ) Fallen trees across Arroyo Seco canyon. San Gabriel Mountains National Monument, California, USA ( ) Upper Switzer Falls. San Gabriel Mountains National Monument, California, USA ( ) Bear Canyon from above. San Gabriel Mountains National Monument, California, USA ( ) Bear Canyon. San Gabriel Mountains National Monument, California, USA ( ) Peaks and Bear Canyon. San Gabriel Mountains National Monument, California, USA ( ) Peak above Bear Canyon at sunset. San Gabriel Mountains National Monument, California, USA ( ) Peaks in fog above Bear Canyon. San Gabriel Mountains National Monument, California, USA ( ) East Fork of the San Gabriel River. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel River flowing between newly leafed trees. San Gabriel Mountains National Monument, California, USA ( ) Yucca, San Gabriel River Canyon, early morning. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel River and newly leafed trees. San Gabriel Mountains National Monument, California, USA ( ) Newly leafed trees, river, and gorge. San Gabriel Mountains National Monument, California, USA ( ) Green grass in San Gabriel River Canyon in late winter. San Gabriel Mountains National Monument, California, USA ( ) Yucca, trees, San Gabriel River, and canyon walls. San Gabriel Mountains National Monument, California, USA ( ) Tree with multiple branches just leafing out. San Gabriel Mountains National Monument, California, USA ( ) Newly leafed trees and rock wall. San Gabriel Mountains National Monument, California, USA ( ) Yucca and trees with new leaves. San Gabriel Mountains National Monument, California, USA ( ) Trees with new leaves bordering East Fork of San Gabriel River. San Gabriel Mountains National Monument, California, USA ( ) Backlit trees with new leaves, San Gabriel River Canyon. San Gabriel Mountains National Monument, California, USA ( ) Backlit bare tree, San Gabriel River Canyon. San Gabriel Mountains National Monument, California, USA ( ) Huge yucca, East Fork San Gabriel River Canyon, Sheep Mountain Wilderness. San Gabriel Mountains National Monument, California, USA ( ) Backlit tree branches with new leaves. San Gabriel Mountains National Monument, California, USA ( ) East Fork of San Gabriel River in late winter. San Gabriel Mountains National Monument, California, USA ( ) Yucca, trees, East Fork San Gabriel River. San Gabriel Mountains National Monument, California, USA ( ) Yucca, trees, San Gabriel River in canyon. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel River flowing between trees with new leaves. San Gabriel Mountains National Monument, California, USA ( ) East Fork San Gabriel River flowing over rocks in late winter, Sheep Mountain Wilderness. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel River flowing over rocks and framed by bare trees, Sheep Mountain Wilderness. San Gabriel Mountains National Monument, California, USA ( ) Cactus, yucca and Bridge to Nowhere. San Gabriel Mountains National Monument, California, USA ( ) Bridge to Nowhere. San Gabriel Mountains National Monument, California, USA ( ) Yucca and Bridge to Nowhere. San Gabriel Mountains National Monument, California, USA ( ) Bridge to Nowhere and sun. San Gabriel Mountains National Monument, California, USA ( ) Moris Dam and Moris Reservoir. San Gabriel Mountains National Monument, California, USA ( ) Moris Reservoir impounded by Moris Reservoir. San Gabriel Mountains National Monument, California, USA ( ) Moris Dam, San Gabriel Canyon. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel Canyon with Moris Reservoir at sunset. San Gabriel Mountains National Monument, California, USA ( ) Banks, Moris Reservoir. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel Dam, dusk. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel Dam and Cucamonga Peak. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel Canyon, San Gabriel Reservoir and Cucamonga Peak. San Gabriel Mountains National Monument, California, USA ( ) San Gabriel Reservoir, Cucamonga Peak, Etiwanda Peak. San Gabriel Mountains National Monument, California, USA ( ) Flowering shurbs and Twin Peaks at sunrise. San Gabriel Mountains National Monument, California, USA ( ) Twin Peaks, early morning. San Gabriel Mountains National Monument, California, USA ( ) Hills and Los Angeles Basin from Glendora Ridge. San Gabriel Mountains National Monument, California, USA ( ) Forested hills, front range. San Gabriel Mountains National Monument, California, USA ( ) Shrubs, hills, and peak from Glendora Ridge. San Gabriel Mountains National Monument, California, USA ( ) Back range mountains from Glendora Ridge. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Glendora Ridge Road. San Gabriel Mountains National Monument, California, USA ( ) Glendora Ridge Road and San Gorgonio range. San Gabriel Mountains National Monument, California, USA ( ) Glendora Ridge Road. San Gabriel Mountains National Monument, California, USA ( ) Tent on Mount Baldy Devils Backbone at dawn. San Gabriel Mountains National Monument, California, USA ( ) Shrubs and pine tree from Devils Backbone at dawn. San Gabriel Mountains National Monument, California, USA ( ) San Antonio Canyon from Mt Baldy at dawn. San Gabriel Mountains National Monument, California, USA ( ) Pine on Backbone ridge at sunrise and Ontario Peak in shadow. San Gabriel Mountains National Monument, California, USA ( ) Trees on Backbone ridge with San Gorgiono Mountain in distant haze. San Gabriel Mountains National Monument, California, USA ( ) Subalpine shrubs and pine trees on Mount San Antonio. San Gabriel Mountains National Monument, California, USA ( ) Pine trees on Mt Baldy. San Gabriel Mountains National Monument, California, USA ( ) Subalpine forest on Mount San Antonio. San Gabriel Mountains National Monument, California, USA ( ) Hiker and trail on Mount Baldy. San Gabriel Mountains National Monument, California, USA ( ) Hiker on Mt Baldy's Devils Backbone. San Gabriel Mountains National Monument, California, USA ( ) Hikers on Mt Baldy summit. San Gabriel Mountains National Monument, California, USA ( ) Sign and flags on Mt Baldy summit. San Gabriel Mountains National Monument, California, USA ( ) Marker on Mount San Antonio top. San Gabriel Mountains National Monument, California, USA ( ) Sign on top of Mount Baldy. San Gabriel Mountains National Monument, California, USA ( ) View from Mount Baldy summit. San Gabriel Mountains National Monument, California, USA ( ) Krummholzed trees below Mt Baldy summit. San Gabriel Mountains National Monument, California, USA ( ) Baldy Bowl. San Gabriel Mountains National Monument, California, USA ( ) Looking down Baldy Bowl. San Gabriel Mountains National Monument, California, USA ( ) Slopes below Ontario Peak. San Gabriel Mountains National Monument, California, USA ( ) Talus Rocks and ridge, Baldy Bowl. San Gabriel Mountains National Monument, California, USA ( ) Sotol with fallen pine cones, Baldy Bowl. San Gabriel Mountains National Monument, California, USA ( ) Forest below Baldy Bowl. San Gabriel Mountains National Monument, California, USA ( ) San Antonio ski hut. San Gabriel Mountains National Monument, California, USA ( ) Mount San Antonio and San Gabriel Mountains from Cajon Pass. San Gabriel Mountains National Monument, California, USA ( ) Mt Baldy from San Antonio Canyon. San Gabriel Mountains National Monument, California, USA ( ) Blooming Sotol and San Antonio Creek. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers, San Antonio creek. San Gabriel Mountains National Monument, California, USA ( ) San Antonio Falls with family at the base. San Gabriel Mountains National Monument, California, USA ( ) San Antonio Falls lower tier. San Gabriel Mountains National Monument, California, USA ( ) San Antonio Falls. San Gabriel Mountains National Monument, California, USA ( ) San Antonio Falls low tier. San Gabriel Mountains National Monument, California, USA ( ) Aerial view of Devils Punchbowl Natural Area. San Gabriel Mountains National Monument, California, USA ( ) Agave and tilted sandstone formation from the base, Devils Punchbowl. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers, sandstone fins in Punchbowl Canyon. San Gabriel Mountains National Monument, California, USA ( ) Tilted sandstone fins at the base of San Gabriel Mountains. San Gabriel Mountains National Monument, California, USA ( ) Wildflowers, sandstone fins, and mountains. San Gabriel Mountains National Monument, California, USA ( ) Punchbowl Formation of the Neogene period. San Gabriel Mountains National Monument, California, USA ( )