MIB Bike Trail
For riders who can ride every trail, MIB DH track is probably the best track of the Col de l'Arzelier. And this track is even better when you mix it with the double black trail called Bucheron at the end: take left after the transfer.
MIB Trail map
This trail is part of the Col de l'Arzelier Bike Park. Simply get to this spot, and you'll easily find this trail.