It's both intense and the most boring thing you could imagine. Picture day after day in a tractor traveling across a white landscape with another tractor in front and another tractor behind. I have only traveled such things by snowmobile, but I've befriended a few of the traverse folks in Greenland and Antarctica and they described it as "intensely exhilarating and extremely boring".
One of those classic stressful but boring jobs. Nothing around you for a thousand miles and it takes 50 days but at any point you could fall into a hole and die.