A Colombian Nukak Maku Indian child rests in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. Since emerging from the jungle in 2005, half naked and carrying blowpipes, the Nukak have lived in settlements near the frontier town of San Jose del Guaviare, a humid outpost in the Amazon 400 km (250 miles) southeast of the capital Bogota. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian boy gestures in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian boy rests in a hammock in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province, September 3, 2015. (Photo by John Vizcaino/Reuters)





Colombian Nukak Maku Indian youths ride bicycles in San Jose del Guaviare of Guaviare province, September 4, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian boy is seen on the street in San Jose del Guaviare of Guaviare province, September 4, 2015. (Photo by John Vizcaino/Reuters)





Colombian Nukak Maku Indian children and women are seen in a refugee camp at Agua Bonita in San Jose del Guaviare of Guaviare province September 3, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian boy is seen in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. (Photo by John Vizcaino/Reuters)





Colombian Nukak Maku Indian woman and children walk barefoot on a street in San Jose del Guaviare of Guaviare province September 3, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian woman holds her baby in a park in San Jose del Guaviare of Guaviare province, September 4, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian woman counts money at a park in San Jose del Guaviare of Guaviare province September 4, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian man weaves with his foot in a refugee camp at Agua Bonita near San Jose del Guaviare of Guaviare province September 3, 2015. (Photo by John Vizcaino/Reuters)





A Colombian Nukak Maku Indian woman feeds her baby on a street in San Jose del Guaviare of Guaviare province September 4, 2015. (Photo by John Vizcaino/Reuters)





Colombian Nukak Maku Indian people walk on a street in San Jose del Guaviare of Guaviare province September 4, 2015. (Photo by John Vizcaino/Reuters)





Colombian Nukak Maku Indian people walk on a street in San Jose del Guaviare of Guaviare province September 4, 2015. (Photo by John Vizcaino/Reuters)