This is new!
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Hundreds of years ago, the west coast of South America was ruled by the Incas - a mysterious empire considered to be the most elaborate society to exist in the Americas before the arrival of Columbus. This is not their story.
For long before the Incas held dominion over the sweeping lands stretching from Colombia to Chile, an even more mysterious and ancient society inhabited this elevated Andean region.
This older empire was called the Tiwanaku state, whom we know even less about. At their peak, they may have only numbered 10,000 to 20,000 people.
What scarce details we do know about the Tiwanaku state come from archaeological finds, uncovering a trail of clues about the Tiwanaku people and their long-gone culture. Back in April, scientists announced the discovery of a big new piece of the puzzle.
In the first systematic archaeological dive and excavation conducted in the waters of the Khoa Reef, close to the Island of the Sun in Bolivia's Lake Titicaca, researchers found submerged evidence of ritual offerings made to supernatural deities – meaning religion existed in this part of the world a lot earlier than we thought.
"People often associate the Island of the Sun with the Incas because it was an important pilgrimage location for them and because they left behind numerous ceremonial buildings and offerings on and around this island," says anthropologist Jose Capriles from Pennsylvania State University.
"Our research shows that the Tiwanaku people, who developed in Lake Titicaca between 500 and 1,100 CE, were the first people to offer items of value to religious deities in the area."
Capriles and his team used sonar and underwater 3D photogrammetry to scan and map the reef during a 19-day research visit to Lake Titicaca during 2013.
Dredging the sediment in the lake, they found puma-shaped incense burners, with fragments of charcoal present on the excavated deposits, and a number of gold, shell, and stone ornaments.
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