Col de Joux Plane
The Col de Joux Plane (elevation 1691 m) is a high mountain pass in the Haute-Savoie Alps, linking Morzine with Samoëns. The climb has been featured several times in the Tour de France, and even famously broke the spirit of Lance Armstrong.
In 1997, Tour winner Marco Pantani up the Col de Joux Plane in 33 minutes. Three years later, the Joux Plane managed to make a victim out of Lance Armstrong. Not that surprising, because the south side of the climb, from Samoëns, is one of the steepest climbs of the Alps (most of the climb is close to 10%). But it is also one of the most beautiful.
Read more about the climb on ClimbByBike.com