Wasted a lot of money and manpower for what?

Rating: Null/10 (4 July 2017)

So we saw in this film was a bunch of white guys with couple of native aboriginal slaves trying to find the origin of the Amazon River. But there's big problem to definite or define the big river's origin since a river as big and long as the Amazon, there would be many tributaries, major and minors from different countries, there's no way that this guy and his team to reach the single source of the Amazonia and claimed they had found the one and only source of it.
From what I saw, this film's production team, the director, the screenplay writers all did a lousy and lazy job to portray this river source finding expedition. To find the origin of the river means that you are against the current, yet what we saw in this film is a bunch of guys lying around on the laughable raft with no sail, no paddles, no rudder, no motor... no nothing, simply let the raft drift along the river, going up-stream? How could it be possible?! The raft obviously was flowing down the river by the current.
The ridiculousness of this scene simply turned me off and, why should I have to waste one more word to review this film?