A good option on a white-out day.
FATMAP difficulty grade
The Gazex Couloir is one of the few good options on a snowy or foggy day; because it is easy to locate the couloir (it is just a short traverse from the top of the Caoubere lift), and because there are some trees and rocky sides to the couloir, giving some visibility when the rest of the area is a white-out.
The couloir does have a gazex cannon in it, so it can have unexpected rubble or ice.
But when it's good, it is good! More info and photos at www.couloirquest.com.