A single ranch can stretch for several hundred thousand acres in Río Negro, a province in northern Argentine Patagonia. Ranch workers oversee far-flung grazing from outposts called puestos, like the one above, where hours are long and comforts are few.
Stark, cold, wet, and windy, Patagonia is home to unique creatures with adaptations that help them thrive in an unforgiving region of climatic extremes.
Patagonia's landscapes of breathtaking peaks, towering glaciers, open pampas, and blue-green fjords invite the world's adventurous travelers to come and play.
National Geographic Explorer-in-Residence Wade Davis calls Brazil a "land of the 10,000 senses." Find out what he means in this collection of photos of the largest nation in South America.