Buenos Aires National, AZ/Wildlife Refuge, Brown Canyon. Dawn's light on Baboquivari with Santa Rita Prickly Pear cactus (Opuntia violacea) amid ocotillo.596H6

Buenos Aires National, AZ/Wildlife Refuge, Brown Canyon. Sheer cliffs of the upper reaches of Brown Canyon with Baboquivari Peak looming in the background at dawn.1196H8

Buenos Aires National Wildlife Refuge, AZ / Summer Poppies, Kallstroemia grandiflora, burst forth after "monsoon" rains drench the Buenos Aires grasslands. 82002H4