Jungles of the Amazon (1928)

If this is an expedition through the Amazonian rain forest, there isn't much to it. We get to see the explorers start in the Andes, hire some local Indians as carriers, then it's on to the Jivaro Indians, well known in the days of serial movies and pulp magazines -- i.e., when this was made -- as savages who shrunk their slain enemies' heads and kept them as souvenirs.