I didn't fly the job, but know who did. That shoot was done up around Valdez, Alaska. Evergreen was working with Valdez Heliski Guides, founded by the late Doug Coombs. VHG usually runs two B-2s out of the Tsaina Lodge.
It was a prepped LZ. Sometimes up there you may have to toe-in (ie film shoots), drop the guide, let him prep it, and come back in once the pad is done.
The terrain up there looks a lot more challenging on film than it is to actually fly around. It isn't particularly high, most of the LZs are from 6000' to 7000' so a B-2 does quite well. There are some drawbacks to the area, there isn't a lot of definition to the terrain when the light goes flat (rocks/snow, no trees) and it can get pretty windy, especially around the Thompson Pass.
(I flew for a different operator up the road)