The man was the last of an indigenous group living in the Tanaru indigenous area in the state of Rondônia, which borders Bolivia.
The majority of his tribe is believed to have been killed as early as the 1970s by ranchers wanting to expand their land.
In 1995, six of the remaining members of his tribe were killed in an attack by illegal miners, making him the sole survivor.
Brazil’s Indigenous Affairs Agency (Funai) only became aware of his survival in 1996 and had been monitoring the area ever since for his safety.
It was during a routine patrol that Funai agent Altair José Algayer found the man’s body covered in macaw feathers in a hammock outside one of his straw huts.