This is in St-Pierre, behind Val Dirène in the Gaspésie in Quebec . It is the frost build up - sort of like the ice storm but this was a frost storm. The offical term is a ZAG...zone d'amplification du givre (frost amplification zone).
Yes, those are miles and miles of trees that look like marshmallows (don't ask how much weight is on the transmission tower.)
Thanks Richard W.