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 Birthday Chutes can be some of the best skiing in White Pine Drainage.
They are nice open runs in the upper 30 degree range that run for almost a thousand feet.
There are several chutes one can choose from, and they all deposit you in the same apron.
They can be skied by accessing the gates at Snowbird, but those are rarely open.
To approach, park at White Pine trailhead on the south side of Little Cottonwood Canyon.
From here take the trail that follows a road grade up the switchbacks and into the upper basin.
Once there stay on the left (E) side of the valley and you should see the chutes appear.
Finally pick a rib, or ridge that looks the best and skin up it.