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!