Squiggling east from the Andes Mountains to the Atlantic Ocean, the mighty Santa Cruz River in Argentina"s Patagonia region flows over some of South America"s sparsest terrain. Over the centuries, some of history"s most notable explorers have been drawn to the winding waterway: Ferdinand Magellan"s 1520 expedition discovered its coastal delta, and Charles Darwin (on the same voyage that took him to the Galápagos Islands) studied the area"s ecosystem during a grueling 1834 side trip up the river. Even now, very few settlements exist along the 240-mile course of the Santa Cruz, considered the last major free-flowing river in Patagonia.
Meandering through Patagonia
Today in History
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‘The memory of Abraham Lincoln is enshrined forever’
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A day to celebrate the sun
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Who s hiding in the kelp?
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Memorial Day
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Playa del Amor, Marietas Islands, Mexico
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Everglades National Park marks 90 years
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Little Pigeon River, Great Smoky Mountains, Tennessee
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Plains zebra foal in Etosha National Park, Namibia
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Walruses in Svalbard, Norway
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World Olive Tree Day
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Tremola Road on the Saint Gotthard Pass in Airolo, Switzerland
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Anza-Borrego Desert State Park, California
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Surf s up—Down Under
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A Welsh wonder turns 70
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Breaking the fast for Eid
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International Day of the Snow Leopard
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Florentine garden brings generations together
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Tom Turkey takes Manhattan
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Saguaro cacti, Ironwood Forest National Monument, Arizona
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Red fox
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Atlantic puffins, Wales
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Anniversary of the Endangered Species Act of 1973
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Norway s Kjeragbolten boulder
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World Reef Awareness Day
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Red squirrel in Cairngorms National Park, Scotland
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World Rainforest Day
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A night on the (ghost) town
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Sitka shines on Alaska Day
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Let’s celebrate
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Caribou on the move
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Poinsettia Day
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Palmyra Atoll National Wildlife Refuge
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Meandering through Patagonia
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Craig Goch Dam in the Elan Valley of Wales
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The first ascent
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May we have this dance?
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A Great view from above
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A sleeping green giant
Bing Wallpaper Gallery

