Inaki Relanzon / Baroque altar piece in Nativity of Durro Church, romanesque church from XII century, and UNESCO world heritage, in the Boí Valley, Pyrenees, Lleida, Catalonia, Spain.July 2009

Jack Dykinga / Teddy bear cholla cactus {Opuntia bigelovii} growing on volcanic lava flow, Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Jack Dykinga / Cerro Colorado volcano crater at sunset with Sierra de los Tanques in background, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Sand dune patterns, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonoran desert, Mexico

Jack Dykinga / Mexico Teddy bear cholla cactus {Opuntia biegelovii} growing on volcanic lava flow, Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Patricio Robles Gil / Gambel's Quail (Callipepla gambelii) adult perched atop a blooming cactus, El Pinacate/Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Tom Vezo / Ferruginous Pygmy Owl (Glaucidium brasilianum) adult peering out from nest hole in Saguaro (Cereus gigantea) cactus, Altar Valley, Arizona

Patricio Robles Gil / Matador praying in front of altar before bull fight, Plaza de Toros, Mexico City, Mexico

Patricio Robles Gil / Matador praying in front of altar before bull fight, Plaza de Toros, Mexico City, Mexico

Jack Dykinga / Birdcage evening primrose {Oenothera deltoides}, Sand sunflowers {Helianthus niveus} and Sand verbena {Abronia villosa} flowering on sand dunes, Pinacate and Gran Desierto Altar Biosphere Reserve, Son...

Jack Dykinga / Birdcage evening primrose {Oenothera deltoides}, Sand sunflowers {Helianthus niveus} and Sand verbena {Abronia villosa} flowering on sand dunes, Pinacate and Gran Desierto Altar Biosphere Reserve, Son...

Jack Dykinga / Birdcage evening primrose {Oenothera deltoides}, and Sand verbena {Abronia villosa} flowering on sand dunes, Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Jack Dykinga / Sand verbena {Abronia villosa} flowering in sand dunes, Sierra del Rosario, Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Jack Dykinga / Sand verbena {Abronia villosa} and Chinchweed {Pectis papposa} flowering in desert, Sierra del Rosario, Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Jack Dykinga / Aerial view of volcanic cinder cone of Cerro Colorado at dawn, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Aerial view of Sykes crater with MacDougal crater and Sierra Hornaday in the background, Biosphere reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Aerial view of Sierra Hornaday mountains and volcano craters in morning mist, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Aerial view of Sierra Hornaday mountains with morning mist pouring through the passes, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Aerial view of ground fog swirling round Crater Caravajales, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Desert lily {Hesperocallis undulata}, Birdcage evening primrose {Oenothera deltoides} and Sand verbena {Abronia villosa} flowering, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonoran deser...

Jack Dykinga / Desert lily {Hesperocallis undulata}, Birdcage evening primrose {Oenothera deltoides} and Sand verbena {Abronia villosa} flowering, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonoran deser...

Jack Dykinga / Sand verbena {Abronia villosa} flowering on sand dunes with Creosote bushes {Larrea tridentata} Sierra del Rosaria, Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Jack Dykinga / Smooth milkvine {Sarcostemma hirtellum} flowering against Saguaro cactus {Carnegia gigantea} Pinacate and Gran Desierto Altar Biosphere Reserve, Sonoran desert, Mexico

Jack Dykinga / Teddy bear cholla cactus {Opuntia bigelovii} growing amongst grass on volcanic lava flow, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Teddy bear cholla cactus {Opuntia bigelovii} and Organ pipe cactus {Stenocereus therberi} growing on volcanic lava flow, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonora, Mexico

Jack Dykinga / Cerro Colorado Crater at sunset, Biosphere Reserve of Pinacate and Gran Desierto Altar, Sonoran desert, Mexico

Jack Dykinga / Teddy bear cholla (Opuntia bigelovii) in overgrown jagged lava flow, after rain, Biosphere Reserve of the Pinacate and Gran Desierto Altar, Mexico

Jack Dykinga / Ocotillo (Fouquieria splendens) flowering with Teddy bear cholla (Opuntia bigelovii). Inactive lava flow in background, Biosphere Reserve of the Pinacate and Gran Desierto Altar, Mexico

Patricio Robles Gil / El Colorado Crater, El Pinacate, Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / Sand dunes, El Gran Desierto de Altar, El Pinacate, Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / Ocotillo (Fouquieria splendens) and Brittlebush (Encelia californica), Sonoran Desert, El Pinacate/Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / Sidewinder (Crotalus cerastes) rattlesnake moving across sand dunes at sunset, El Pinacate/Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / Sidewinder (Crotalus cerastes) rattlesnake moving across sand dunes, El Pinacate/Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / Black-tailed Jackrabbit (Lepus californicus) alert adult in El Pinacate/Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / El Elegante Crater is 1400 meters wide and 140 meters deep, El Pinacate, Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Patricio Robles Gil / Desert Sand Verbena (Abronia villosa), El Pinacate, Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Jose B. Ruiz / Interior of the Barroca Chapel, in the Romanesque Church of Saint Bartholomew. Guadalajara, Spain

Patricio Robles Gil / Desert Bighorn Sheep (Ovis canadensis nelsoni) adult running through rocky desert landscape, El Pinacate/Gran Desierto de Altar Biosphere Reserve, Sonora, Mexico

Tom Vezo / Ferruginous pygmy owl juvenile perched on cactus {Glaucidium brasilianum} Arizona USA

Tom Vezo / Ferruginous pygmy owl in cactus nest hole {Glaucidium brasilianum} Arizona USA

Tom Vezo / Ferruginous pygmy owl juvenile perched on cactus {Glaucidium brasilianum} Arizona USA