Analysing terrain data
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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 Fortress is the first way to ski into the Pinnacles area south of Saddle Peak.
It is great option days after a storm when Saddle is skied out.
Head south just past Argentina bowl.
At the high point south of Argentina you will see a nice open snowfield that heads down towards the first pinnacle.
Ski this powder field, but head left towards the ridge after about 450 feet of skiing.
Here you can get through the slots pretty easily.
Take one of a few nice north facing shots through the trees down towards the bottom of Argentina.
Hit the Argentina traverse, and head back to Bridger Bowl.