After a very cold night camping at Fersit, during which time everything froze, Kat and I toured up to Chno Dearg... and down again. Conditions are perfect! Several centimetres of surface hoar, on top of soft snow on a firm base gave for fun skiing.
If these crystals are buried before thawing they will represent a very weak layer in the snow pack. They're also very easily lifted by wind, smashed up, transported and deposited as wind slab.
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