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.
Atmospheric gully line under a rock face which can be used as a more testing entry point to explore Caenlochan.
The conditions lower down in the gully are difficult to predict and they cannot be assessed from the entry point.
Taking crampons to climb out of the gully in case of bad conditions lower down is definitely recommended. Also, the gully contains numerous rollers and is prone to windslabs. The gully is best accessed from Glas Maol and starts right at the col between Glas Maol and Little Glas Maol.
There is an alternative entry that is more rocky and can "cliff-out"-- it is thus more serious and its entry just before the col between Banana Gully and Banana Gully Direct.