This was made by the same team that made the notorious "Ingagi" (1930) the year before. It was apparently just as fictitious.
The savage Solomon Island cannibal was actually famed Hollywood actor/make-up/stuntman Charles Gemora. He had specialized in playing gorillas as he had done in the team's previous film, "Ingagi" (1930).
This was promoted as a documentary about an expedition to the Solomon Islands where they discovered cannibalism. It was actually filmed in the "jungles" of California.