Cabeza Prieta National Wildlife Refuge, AZ / Cottontop cactus, Echinocactus polycephalus, with the Tinajas Altas Mountains at dawn. 303H7
Cabeza Prieta National Wildlife Refuge, AZ / Lone Saguaro cactus, Carnegiea gigantea with long time exposure recording "star-trails" rotating around the north star. 303H1
Sonoran Desert National Monument, AZ / Sand Tank Mountains, Saguaro cactus, Carnegiea gigantea, at sunrise. 703H5
