Hi John,
The height doesn’t matter, the mountains high 1000 or 1500 meter in Scotland or anyway near 57 degree latitute are like a 3000 3500 meters in north Italy, 45 degree.
I tried to climb strålaus a summit up 1000 mt at 59 degree latitude in Norway. It was a total failure due to the wx suddly change.
My backpack was a little bit lighter than yours, 7-8 kg it’s enough.
Speaking about Ben Nevis… Scottish ice trip in Ben Nevis
73
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