Desert in bloom with britlebush, saguaro cactus, and mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33457.html Organ pipe cacti on slope in spring. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33463.html Brittlebush and prickly pear cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32819.html Cactus and carpet of yellow wildflowers, Rincon Mountain District. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32816.html Multi-armed saguaro cactus, sunset, Lost Dutchman State Park. Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33517.html Tall saguaro cactus on the slopes of Tucson Mountains, late afternoon. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32850.html Cholla cactus close-up. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32828.html Royal lupine and prickly pear cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32799.html Grassy area near Mica View, Rincon Mountain District. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32814.html Cactus and annual flowers. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33453.html Lupine, saguaro cactus, and occatillo. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32810.html Sonoran desert in bloom, Tucson Mountain District. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32811.html Tall saguaro cactus (scientific name: Carnegiea gigantea), Hugh Norris Trail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32844.html Saguaro cacti on hillside, Hugh Norris Trail, late afternoon. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32846.html Saguaro cactus at sunset, Hugh Norris Trail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32851.html Twin cactus at dawn near Ez-Kim-In-Zin. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32855.html Phacelia and prickly pear cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32800.html Saguaro cactus silhouettes at sunset. 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Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32835.html Brittlebush and backlit cactus at sunrise near Ez-Kim-In-Zin. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32858.html Tall cactus and Tucson Mountains, early morning. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32860.html Rocks, flowers and cactus with Panther Peak and Safford Peak in the background. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32863.html Rocks, flowers and cactus, morning. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32865.html Cactus lupine, and mexican poppies with Panther Peak in the background, afternoon. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32837.html Wildflowers and cactus, Mica View, Rincon Mountain District. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32813.html Arm of a saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32834.html Cactus and canyon walls, Tapeats Creek. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8484.html Rocks, flowers and cactus near Ez-Kim-In-Zin. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32864.html Cactus, field of brittlebush in bloom, and Ajo Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33459.html Prickly ball on saguaro cactus, precursor of a new arm. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32801.html Brittlebush, cactus, and hills, Valley View overlook, morning. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32825.html Cactus, mexican poppies, and palo verde near Ez-Kim-In-Zin, afternoon. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32839.html Organ Pipe cactus silhouetted at sunset. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8870.html Circular Hohokam petroglyphs on Signal Hill. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32804.html Saguaro cactus and moon at dawn. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1233.html Bark of old saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32824.html Backlit Saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1222.html Saguaro cactus blooms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1237.html Saguaro cactus and moon. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8877.html Brittlebush and cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32822.html Chain fruit cholla cactus and brittlebush in bloom. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33442.html Cacti, Diablo Mountains, dusk. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8862.html Mexican Poppies and Ajo Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33466.html Cactus and Sonoyta Valley, dusk. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8869.html Saguaro cactus flowers and arm. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1238.html Cactus and carpet of yellow wildflowers, Rincon Mountain District. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32815.html Multi-armed sagurao cactus near Ez-Kim-In-Zin. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32836.html Dense saguaro cactus forest at sunrise near Ez-Kim-In-Zin. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32854.html Brittlebush, cactus, storm clouds, and Ajo Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33472.html Saguaro cactus and Tucson Mountains. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1232.html Backlit Saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1223.html Saguaro cactus with blooms. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1235.html Palo verde and saguaro cactus on hillside. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1231.html Saguaro cactus flowers against blue sky. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1240.html Saguaro cactus in bloom. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu2192.html Base of organ pipe cactus and yellow brittlebush flowers. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33451.html Close-up of Ocatillo bloom. 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Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33510.html Cactus on hillside in spring, Hugh Norris Trail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32841.html Brittlebush and cactus near Ez-Kim-In-Zin, morning. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32861.html Barrel cacti close-up. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8465.html Cactus detail, Arizona Sonora Desert Museum. Tucson, Arizona, USA http://www.terragalleria.com/america/arizona/tucson/picture.sagu1247.html Saguaro cacti forest on hillside, late afternoon, West Unit. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu2193.html Giant Saguaro cactus (scientific name: Carnegiea gigantea), mid-day. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1225.html Cactus detail. 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Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32849.html Teddy-bear Cholla cactus and phacelia. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32827.html Detail of Organ Pipe Cactus. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8874.html Backlit cactus. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8873.html Sun and Saguaro cactus, sunrise, Lost Dutchman State Park. Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33520.html Barrel cactus, Ajo Mountains, and dark clouds. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33474.html Saguaro cactus silhouetted at sunset. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33478.html Saguaro cactus and Superstition Mountains silhoueted at sunrise, Lost Dutchman State Park. Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33519.html Saguaro cactus flower and bees. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1242.html Arms of blooming Saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1241.html Organ pipe cactus and brittlebush on hillside, North Puerto Blanco Drive. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33440.html Skin of old saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32830.html Cacti, Diablo Mountains, dusk. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8878.html Saguaro cacti forest and occatillo on hillside, West Unit. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1230.html Detail of Organ Pipe Cactus. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8875.html Tall cacti and Superstition Mountains, Lost Dutchman State Park, afternoon. Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33509.html Cactus detail, Arizona Sonora Desert Museum. Tucson, Arizona, USA http://www.terragalleria.com/america/arizona/tucson/picture.sagu1244.html Cacti in Surprise Valley, late afternoon. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8464.html Ocotillo and cactus on a slope. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8872.html Hohokam petroglyphs on Signal Hill. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32805.html Cactus detail, Arizona Sonora Desert Museum. Tucson, Arizona, USA http://www.terragalleria.com/america/arizona/tucson/picture.sagu1246.html Cholla cactus on hillside. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1226.html Saguaro cactus and moon, dawn. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1227.html Arms of Saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1234.html Group of saguaro cactus in spring, Ajo Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33476.html Cactus and brittlebush in the spring under cloudy skies, North Puerto Blanco Drive. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33446.html Organ pipe cactus and brittlebush (Encelia farinosa) in bloom. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33447.html Hikers descending Hugh Norris Trail amongst saguaro cactus, late afternoon. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32848.html Barrel cactus and Redwall from below. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca20091.html Saguaro cactus at night with stary sky, Tucson Mountains. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32853.html Cactus and Sonoyta Valley, dusk. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8868.html Sotol, Arizona Sonora Desert Museum. Tucson, Arizona, USA http://www.terragalleria.com/america/arizona/tucson/picture.sagu1250.html Mexican Poppies, cactus, and Deablo Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33467.html Barrel cactus and Thunder Spring, early morning. Grand Canyon National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.grca8472.html Close-up of Mexican Poppies (Eschscholzia californica subsp. mexicana) and Cactus. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33469.html Cactus on hillside. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8879.html Saguaro cactus silhouetted on hill at sunrise near Valley View overlook. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32820.html Multi-armed saguaro cactus in spring, Ajo Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33475.html Group of Saguaro cactus amongst flowering brittlebush. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33458.html Mexican poppies and cactus squeleton. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32840.html Pencil cholla cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32833.html Cactus and wall, Old Tucson Studios. Tucson, Arizona, USA http://www.terragalleria.com/america/arizona/tucson/picture.usaz8923.html Saguaro cactus trunk close-up. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1248.html Old saguaro cacti, Lost Dutchman State Park. Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33523.html Saguaro cactus trunk detail. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu1249.html Apricot mellow and prickly pear cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32812.html Saguaro cactus, approaching storm. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz33471.html Saguaro Cactus on hillside. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8865.html Cactus Wren nesting in a cavity of a saguaro cactus, Lost Dutchman State Park. Arizona, USA http://www.terragalleria.com/america/arizona/phoenix/picture.usaz33522.html Hiking down Hugh Norris Trail amongst saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32845.html Ocotillo and cactus on a slope. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8880.html Saguaro and Ocotillo on a slope. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz8881.html Bark of old saguaro cactus. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu32823.html Base of organ pipe cactus and yellow brittlebush flowers. 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Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu21016.html Cactus forest on hillside, Gates pass, morning. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu21013.html Ocatillo and Saguaro cactus on hillside. Saguaro National Park, Arizona, USA. http://www.terragalleria.com/parks/np-image.sagu21011.html Cactus and Puerto Blanco Mountains. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz20165.html Ocotillo and cactus on a slope. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz20166.html Organ Pipe cactus and Ajo Range, late afternoon. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz20167.html Organ Pipe Cactus and Saguaro. Organ Pipe Cactus National Monument, Arizona, USA http://www.terragalleria.com/america/arizona/organ-pipe-cactus/picture.usaz20168.html