Nearly 4 mm thick, the cover is made from synthetic fibres that protect the snow from ultraviolet radiation.
It was laid out on Tuesday by employees of Andermatt Gotthard Sportbahnen, the company that operates ski lifts at the resort.
The company said it took the step because employees had watched the glacier recede 20 metres from one of its lift stations in only 15 years.
Global Warming Watch are not in it to say we told you so, but our prescience is spooky: :::[Day after tomorrow? It's a wrap.]
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