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.
Steep and committing but shy of extreme, the couloir takes a line straight down the far skiers right rock face above the lake.
The couloir is around 150m vertical after some enjoyable (albeit traversing) skiing. Watch out for wind-slabs when traversing over the the couloir - the terrain is exposed due to the rock face below.