Analysing terrain data
The exposure grade does not take into account objective hazards (stone fall, seracs, etc) but only the consequences of the skier falling.
Low Exposure (E1): Exposure is limited to that of the slope itself. Getting hurt is still likely if the slope is steep and/or the snow is hard.
Medium Exposure (E2): As well as the slope itself, there are some obstacles (such as rock outcrops) which could aggravate injury.
High Exposure (E3): In case of a fall, death is highly likely.
Extreme Exposure (E4): In case of a fall, the skier faces certain death.
The Grey Zone is a large open zone in the alpine, accessible from a steep bootpack near Glacier Express.
Once up the bootpack, known as 'The Chimney' there are 3 or 4 routes down including a couple of chutes and an open meadow.
This open, low-angle field is the main Grey Zone route and has some sweet powder accessible from it.
Unfortunately because of the low angle it means you don't actually get that many turns in, especially given the effort from the steep chimney bootpack! Other than a few boulders there's not a lot to be wary of if you follow the obvious pitch leading down to the Crystal Hut. The Chimney is accessed from traversing high just after Spanky's Ladder until the cliffs are in front of you and there's a little space in front of you to start hiking up between the trees.
The traverse can be hard for snowboarders and the bootpack is steeper and longer than Spanky's Ladder.