A true depiction of how as society we developed,a journey which people like us took few years back to verify the correctness,of giving up the comforts and traveling to find the facts, importance of keeping a journal so that it can be passed out to every person traversing the route.
The idea that really moved me in the movie was, finding the cairn of the previous explorer,the journal read we are running out of food yet leaving a can of food along with the journal for the person finding the cairn.
An impressive feat of being human.