There are several storylines that could use a forest with tents and weirwood trees and the occasional shack, but the fake snow (bagged and on the ground) again points to scenes beyond the Wall.
picha
Game of Thrones
season 3
set picha
clandeboye estate
This Game of Thrones picha contains
kuishi mwaloni, live oak, beech, beech mti, mti beech, mahogany, and mahogany mti.
There might also be
california nyeupe mwaloni, bonde mwaloni, bonde nyeupe mwaloni, roble, quercus lobata, sitka spruce, picea sitchensis, nyeupe mwaloni, and oak nyeupe.