Echoes of the Invisible Ending Explained [SPOILER!]

SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!

SPOILERS AHEAD

Echoes of the Invisible Plot Summary and Synopsis

Echoes of the Invisible turns its lens onto explorers who are pushing the human body and technology beyond known limits in the most extreme environments on Earth. It follows Al Arnold, a blind man running through the deadly deserts of Death Valley; Rachel Sussman, a photographer capturing photographs of the oldest living organisms; Paul Salopek, a journalist walking across the world in the footsteps of the earliest human migrations; and scientists building machines to look back nearly to the beginning of time. These individuals are linked by their search for the fabric of our interconnectedness before it is lost in the noise of our distracted and divided world.

Source: Wikipedia (CC BY-SA 3.0).