Biosphere Reserve of the, MEX/Pinacate & Gran Desierto Altar, Mexico Teddy bear cholla (Opuntia bigelovii) volcanic lava flow,with Organpipe cactus (Stenocereus therberi.)395H1

Biosphere Reserve of the, MEX/Pinacate & Gran Desierto Altar, Mexico Smooth milkvine (Sarcostemma hirtellum) flowering against Saguaro cactus (Carnegiea gigantea).395V4