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.
To get to Christmas tree valley, you need to cut in through some denser trees on the outskirts of this tree run before you emerge into a fairly open valley of smaller Christmas trees.
If you manage to cut in high enough, you might see the cabin made out of logs (sometimes buried in the snow).
It's great fun picking your way through these trees, and there's some sweet drops off some small to medium rocks, with (in general) good landings.
As with all tree runs, travel at least in pairs, wear a helmet, and have a plan.