Dig this incredible behind the scenes peek at all the hardwork that goes into crafting a competition ready halfpipe and slopestyle course. Building an elite venue for the world’s best freeskiers and snowboarders is mixture of art, science and highly skilled craftsmanship. Hats off to all folks behind  Mammoth Mountain’s Unbound Terrain Park, they are a legit cream of the crop crew.  Toyota U.S. Grand Prix qualifiers start today at Mammoth with events running through Sunday. If you’re interested in attending FIND MORE INFO HERE.