Manguaré drum-talkers of the middle Caquetá, the Bora signalling across the forest on great slit-gongs while the neighbouring Andoke held a language unrelated to any other.
Decimated alongside the Witoto in the Putumayo rubber terror — populations cut to a tenth — the Bora and Andoke fled across the Caquetá; both survive as small peoples in Colombia and Peru, the Andoke down to a few hundred speakers and the Bora relocated largely to the Peruvian Ampiyacu.
The Putumayo rubber terror under Arana that decimated the Bora and Andoke alongside the Witoto.
Sweeping Amazon history for the rubber era and its peoples.