Atloc | Points

Hello, I'm looking for the name of a movie I saw years ago. All I remember is: Three protagonists(?) searching for treasure in the jungle. It's found at a Dam/reservoir/construction site. At the end...

This is an excellent idea, but this is not the one, essentially because of the time frame. Escape was released the year I watched my movie on tv but at the time (in France) all movies on tv were at least...