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.
Take the funicular to the top station before skinning/hiking up to the top of Cairngorm.
From here, ski off the summit in a south/south-westerly direction, descending to the top of Stag Rocks.
It can be quite difficult to find the entrance to both Y and diagonal gully (close neighbours), especially in flat light so make sure you have a map/compass in addition to FATMAP and know exactly where you’re headed.
There is a rocky outcrop at the top of the line, giving both contrast and the gully's name.
Skier's right can be a bit easier to get into, though cornices can still be an issue if recent winds have been from the north.
Unusually for Scotland, this line gets steeper towards the bottom so make sure that your turns are calculated and that you are aware of any hazards in the gully such as protruding rocks.
From the bottom, skin/hike out of the Loch Avon basin into Coire Domhain where you can decide where you go next! Finally, it is worth mentioning that Y Gully holds a southern aspect and is therefore warmed by the sun later in the season.