Tag: south america

ANCIENT DISCOVERIES IN SOUTH AMERICAN CAVE REVEALED TO BE THOUSANDS OF YEARS OLDER THAN EXPERTS THOUGHT

Throughout the world, ancient artistic depictions that were long ago applied to the walls of caves and other stone surfaces offer a window to the past, and into the minds of those who crafted such imagery.

Now, recent research into the emergence of rock art in Patagonia has revealed that imagery depicted at the Cueva Huenul 1 cave is thousands of years older than archaeologists previously estimated.

The findings, detailed in Science Advances, offer new insights into both the evolution of rock art in the region and the ancient humans who resided there, but also have broader implications for our understanding of the sociocultural conditions that might have helped propel the emergence of ancient art.

Unlike other parts of South America, explorations of Patagonia’s prehistory were comparatively recent and remain limited in many respects, with much of its rock art and other archaeological offerings still undated using modern techniques.

Some of the most striking art in the region exists at the Cueva Huenul 1 cave, whose walls and ceiling feature almost 900 paintings that past studies have grouped into 446 motifs.

“CH1 is the most notable place for pigment-based rock art production in northwestern Patagonia and neighbor areas of central-western Argentina and central Chile,” the authors of the new study write, who now say they are among the oldest anywhere in the region, dating to thousands of years earlier than previous studies had placed them.

“We report the earliest set of directly radiocarbon-dated rock art motifs from the archaeological site Cueva Huenul 1,” some of which the authors say appeared “8.2 thousand years before the present (ka B.P.), predating previous records by several millennia,” and having been created over close to 130 generations during a 3,000-year period.

According to the study, this mid-Holocene gallery coincides with a “rock art emergence” phase that dovetails with arid conditions in the region and a temporary decline in the region’s human population.

“We suggest that this diachronic rock art emerged as part of a resilient response to ecological stress by highly mobile and low-density populations,” the authors report.

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PEOPLE LIVING IN THE ANDES 9,000 YEARS AGO MAY COMPLETELY REDEFINE OUR UNDERSTANDING OF HUNTER-GATHERERS

Isotopic analysis of the remains of people living 9,000-6,500 years ago in the Andes Mountains of modern-day Peru indicates they were not hunter-gatherers as previously believed but instead would be better categorized as “gatherer-hunters.” That’s because “hunter-gatherers” implies a diet consisting primarily of hunted meat supplemented by a diet of gathered plants, whereas these early Peruvians existed on a diet that was 80% plant-based.

“Conventional wisdom holds that early human economies focused on hunting — an idea that has led to a number of high-protein dietary fads such as the Paleo diet,” explained University of Wyoming Assistant Professor of Archaeology Randy Haas, who led the research effort. “Our analysis shows that the diets were composed of 80 percent plant matter and 20 percent meat.”

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Huge ancient city found in the Amazon

A huge ancient city has been found in the Amazon, hidden for thousands of years by lush vegetation.

The discovery changes what we know about the history of people living in the Amazon.

The houses and plazas in the Upano area in eastern Ecuador were connected by an astounding network of roads and canals.

The area lies in the shadow of a volcano that created rich local soils but also may have led to the destruction of the society.

While we knew about cities in the highlands of South America, like Machu Picchu in Peru, it was believed that people only lived nomadically or in tiny settlements in the Amazon.

“This is older than any other site we know in the Amazon. We have a Eurocentric view of civilisation, but this shows we have to change our idea about what is culture and civilisation,” says Prof Stephen Rostain, director of investigation at the National Centre for Scientific Research in France, who led the research.

“It changes the way we see Amazonian cultures. Most people picture small groups, probably naked, living in huts and clearing land – this shows ancient people lived in complicated urban societies,” says co-author Antoine Dorison.

The city was built around 2,500 years ago, and people lived there for up to 1,000 years, according to archaeologists.

It is difficult to accurately estimate how many people lived there at any one time, but scientists say it is certainly in the 10,000s if not 100,000s.

The archaeologists combined ground excavations with a survey of a 300 sq km (116 sq mile) area using laser sensors flown on a plane that could identify remains of the city beneath the dense plants and trees.

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The Amazon may contain thousands of undiscovered ancient structures

There are probably more than 10,000 undiscovered pre-Columbian archaeological sites hidden in the Amazon, researchers have concluded after surveying a fraction of the sprawling rainforest.

The study adds to growing evidence suggesting that the region isn’t a pristine tropical forest, but has been significantly altered by Indigenous societies that have inhabited it for more than 12,000 years.

Luiz Eduardo Oliveira e Cruz de Aragão at the National Institute for Space Research in Brazil and his colleagues surveyed 5315 square kilometres of the Amazon using lidar, a technology that uses reflected laser light to create a 3D representation of a landscape.

By beaming pulses of light into the rainforest, usually from planes or drones, lidar records slight variations in topography and has uncovered numerous archaeological sites in recent years.

The team discovered 24 previously unknown earthworks in the areas it surveyed, which are thought to be the remnants of civilisations that lived between 1500 and 500 years ago.

The discoveries include a fortified village in the southern Amazon, a region known to have been densely populated due to the high concentration of earthworks that were connected by ancient roads.

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Second Chinese Spy Balloon Spotted

A second Chinese spy balloon has reportedly been spotted in Latin America.

On Friday evening, the Pentagon confirmed this news. Pentagon Press Secretary Brig. Gen. Patrick Ryder made a statement to CNN.

“We are seeing reports of a balloon transiting Latin America. We now assess it is another Chinese surveillance balloon,” Ryder said.

This comes as a balloon was spotted moving east, 60,000 feet above the central continental U.S., last Friday.

Initially, the Pentagon had said the balloon currently did not pose a “military or political” threat.

According to a senior defense official, the United States has “extremely high confidence” that the object was a Chinese high-altitude balloon that was flying over key locations to gather intelligence. One of the states where the balloon was noticed was Montana, which is home to Malmstrom Air Force Base, one of the country’s three nuclear missile silo fields.

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Ancient DNA analysis sheds light on the early peopling of South America

The Americas were the last continent to be inhabited by humans. An increasing body of archaeological and genomic evidence has hinted to a complex settlement process. This is especially true for South America, where unexpected ancestral signals have raised perplexing scenarios for the early migrations into different regions of the continent.

Many unanswered questions still persist, such as whether the first humans migrated south along the Pacific coast or by some other route. While there is archaeological evidence for a north-to-south migration during the initial peopling of the Americas by ancient Indigenous peoples, where these ancient humans went after they arrived has remained elusive.

Using DNA from two ancient human individuals unearthed in two different archaeological sites in northeast Brazil—Pedra do Tubarão and Alcobaça—and powerful algorithms and genomic analyses, Florida Atlantic University researchers in collaboration with Emory University have unraveled the deep demographic history of South America at the regional level with some unexpected and surprising results.

Not only do researchers provide new genetic evidence supporting existing archaeological data of the north-to-south migration toward South America, they also have discovered migrations in the opposite direction along the Atlantic coast—for the first time. The work provides the most complete genetic evidence to date for complex ancient Central and South American migration routes.

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