The Pink Jungle

The Pink Jungle is a 1968 film thriller starring James Garner, George Kennedy and Eva Renzi. The film was directed by Delbert Mann and written by Charles Williams, adapting the 1965 novel Snake Water by Alan Williams.

When the three are reunited, they discover a treasure map on the corpse of the late Captain Stopes and the three team up to find it. They encounter McCune, a clever Australian who claims to be Stopes former partner.McCune steals everyones supplies and mules and takes off, but he is hunted down by Ryderbeit and killed. The remaining three make it to the diamond mine, only to find that a South American bandit leader, Raul Ortega, has beaten them to it. A battle leads to Ortega being seized and his men killed. ........

Source: Wikipedia