Photograph of a Korubo man.  The local name for their tribe (Caceteiro) due to their custom of protecting themselves with wooden clubs, which are known locally as bordunas. In 2005, their total population was estimated at 150-200 people.  Most of the Korubo remain uncontacted with a small splinter group of 23 people currently being in contact with the outside world.  Little is know of their spiritual or religious practices, but typically native indigenous Amazonians are animists believing that the world is inhabited by animal spirits.  The Korubo live inside an exclusion zone in the Javari Valley.  Here the Brazilian government has set aside a large tracts of virgin rainforest  for indigenous Amazonian Indians that is off limits to non-indigenous outsiders.