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.
Park at the Butler Fork trailhead 8.2 miles up Big Cottonwood Canyon road.
From here follow the trail up the deep canyon, cross the bridge and stay left where you may find a trail sign.
Skin up the aspen trees towards Circle All Peak and head W once you hit the ridge.
From here you can drop down into Mill A, or stay high and traverse along towards the saddle between Mount Raymond and Gobblers Knob.
From the saddle stay on the ridge towards Mount Raymond.
This can be a bit challenging up high due to some rocky sections and old bristlecone pine trees.
At the summit you'll see the hanging slab that starts the descent.
The run decreases nicely in pitch and there is a fun finish apron.
From here you can continue all the way out Mill A via a fun half pipe gully, or trace your skin track back the way you came.