In reply to Lankyman:
> >This is the fourth consecutive year that it has completely vanished by autumn.
> Can't someone cover it up with a sheet or something to stop it melting?
Glacier farming is done in other parts of the world. It’s on my todo list to research what it would take to farm a glacier in Scotland or at least boost snow retention. Snow fences to prevent the wind stripping it, spraying water at the right time to make ice layers to prevent wind scouring, potentially minimal quantities of solar powered snow making or moving snow to put clean white surfaces over dirty ones etc.
I used to be an avid follower of the Scottish highlands snow patch threads but they seemed to peter out.
There is a suggestion from thermoluminescence data that there could have been a glacier in the cairngorms 400 years ago but nobody has any human record of the location at the time.