Upon completion of this Vista there is dialogue that reads:

"In years, past, the hot alpine summers would have seen this fallen Dravanian outflyer blown with maggots and reduced to bones in a matter of days. Now, in the endless winter wrought by the Calamity, the carcass rests in the permafrost under a think blanket of snow, perfectly preserved since the day he was pierced through the heart by a ballista."

I think you mean thick in the bold, unless the Ishgardians have developed some kind of smart snow which they could coin as iSnow.