Biosphere Reserve of the, MEX/Pinacate & Gran Desierto Altar, Sonora Mexico. Sierra Hornaday, distant right and several un-named volcanos rise through morning fog.1193h6X9+3du

Biosphere Reserve of the, MEX/Pinacate & Gran Desierto Altar, Sonora Mexico. Sierra Hornaday, distant right and several un-named volcanos rise through morning fog.1193h6X91

Biosphere Reserve of the, MEX/Pinacate & Gran Desierto Altar, Sonora Mexico. Sykes Crater in afternoon light, Mac Dougal Crater and Sierra Hornaday in background.1193h6x96