[Matthew McConaughey's] scenes in the jungle with dashing geologist Edgar Ramírez are much duller than those in the movie's latter half.

Gaghan never catches you up in Wells's gold-fever dream, so the movie, like his plan, falls apart. His attempt to impose a mock-heroic template on the material, doesn't fit.

Despite McConaughey's commitment to the role, his Kenny is more pathetic than sympathetic, which makes caring about him for two hours a difficult task.

A movie that is completely hollow and only saved by Matthew McConaughey's committed performance.