Automatic cameras installed by the Brazilian National Foundation for Indigenous Peoples captured images of the Massaco group—named after the river that flows through their territory, yet no one knows what they call themselves.
The Massaco do not engage with researchers; their language, social structure, and beliefs remain a mystery. They deter outsiders and vigilantly guard their land.
According to the Brazilian National Foundation for Indigenous Peoples, the tribe's population has increased to 200-250 individuals over the past 35 years.