The Sky Above, the Mud Below (1961)

In 1959, a group of European explorers set out to document the native culture of Dutch New Guinea. They commence a harrowing seven-month trek across the island, from the south coast to the north coast, during which some members of the team perish. Along the way, they encounter many fascinating villages and immortalize native traditions on film - among them, cannibalism and rites such as sleeping on skulls. The local wildlife is also extensively featured.