This past spring, Canadian freeskier Max Moffatt returned to his home turf of Sunshine Village, Alberta to build and challenge one of the hardest rails ever to be created.

The idea was simple: complete a rail, add another, complete it, add another, complete it, add another... to see who can go the furthest. Easy in theory, but insanely challenging in real life.

This is a new take on the classic game Add On, taken to the extreme. The video features top rail skiers Moffatt, Jesper Tjäder, Hunter Henderson and friends as they keep adding different-shaped rails to see who can complete this challenge, and we recently had the chance to sit down with Moffatt to get the behind-the-scenes scoop on the project (click here for the interview).