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.
Thumbs UP is a fun couloir for experienced skiers.
It is steep and narrow at the top and widens at the bottom.
It leaves you with options of cliff airs below, or trend to the right to avoid cliff band and exit into Greely Bowl.
It is a consequence line.
You will want to ride the lookers right couloir.
You can usually side slide into the entry, however, it may have a small cornice and require a small drop.
Scope your line from the bottom before taking it on.
Be sure of the location before you drop in.
It is the last couloir on the ridge before you get forced to skiers right, down Mack Daddy Face.
You should be able to identify a clean line from the top.
Beware of causing a slide onto Greely Bowl below.