Patagonia is a strange and terrifying place, a vast tract of land shared by Argentina and Chile where the violent weather spawned over the southern Pacific charges through the Andes with gale-force winds, roaring clouds, and stinging snow. Squarely athwart the latitudes known to sailors as the "roaring forties" and "furious fifties," Patagonia is a land trapped between angry torrents of sea and sky, a place that has fascinated explorers and writers for centuries. Magellan discovered the strait that bears his name during the first circumnavigation. Charles Darwin traveled Patagonia's windy...