Air surveillance images showed the tribe in the Javari Valley close to the border with Peru, according to Fabricio Amorim of the National Indian Foundation (Funai).
The flights showed four large villages featuring huts and plantings of corn and bananas by the community, Funai said.
"The plantation, as well as the huts, are new, dated to a maximum of one year," said Mr Amorim.
"The state of the straw used in construction and the planting of corn indicate this. Besides corn, there was bananas and a vegetation in undergrowth that appeared to be peanuts, among other crops." The flyovers were carried out after small forest clearings were detected on satellite images, indicating the possibility of human settlements.
Brazilian authorities ban the general population from any contact with the isolated tribes due to concerns that they could easily become infected with diseases for which they carry no immunity.
The region is already threatened by illegal logging, fishing and gold mining operations and by drug traffickers operating in the area, according to Funai officials.
The newly discovered group probably belongs to the Pano linguistic community which lives in the area, Mr Amorim said.
Funai has not established contact with the group but said that the Javari Valley is regarded as having the "highest concentration of isolated groups in the Amazon and the world" and could be home to 2,000 indigenous people from at least 14 tribes.
Prehistoric Underwater Wall Divides Scientists 2013 12 11 Two camps of scientists have faced off on the issue of the underwater structure known as Bimini Road off the coast of the Bahamas since it was first discovered in 1968.
One camp says it is a 12,000–19,000-year-old man-made structure—flouting the conventional understanding that advanced civilizations only emerged some 5,000 years ago.
The other camp says it is a natural formation.
Author, Researcher Lloyd Pye Dies 2013 12 10 We’re grieved by the sad news that writer and researcher Lloyd Anthony Pye passed away yesterday, December 9, 2013, after a battle with cancer. He was best known for his work with The Starchild Project.
Lloyd was a frequent welcome guest to Red Ice Radio, and we enjoyed the opportunity to speak with him about his work and his writing over ...
Mars May Have Harbored Life 3.6 Billion Years Ago 2013 12 10 Mudstones from Gale Crater, the original landing site of Curiosity, were formed in a lake which may have existed on the planet for hundreds of thousand of years according to scientists.The basin which is 150km wide with a mountain at its centre, could very well have sustained more than one lake approximately 3.6 billion years ago.
Research analysis shows that the ...
Geologists discover ’super volcano’ in Utah, possibly larger than Yellowstone 2013 12 10 Geologists at Brigham Young University have discovered what may be the world’s largest "super" volcano that erupted in Utah’s own backyard.
While there are a variety of volcanoes that blast away in different ways, super volcanic eruptions are the biggest that collapse into large calderas. Yellowstone Park is the remains of one of those calderas and it’s still very much alive ...
Rice grown near crippled Fukushima nuclear plant served to govt officials 2013 12 10 Rice from fields in the Fukushima prefecture, evacuated after the worst nuclear disaster in Japan, will be served to government officials for 9 days in a bid to demonstrate the safety of the country’s most-beloved crop, a local broadcaster reported.
The rice cultivated in several decontaminated fields in the Yamakiya District in Kawamata Town and Iitate Village, two areas designated as ...