This must have been super challenging to shoot but it really paid off to do as much of this practically as they did, because I was immersed the entire time. There are a few of-the-era effects/moments over matte scenes but they do a very good job of keeping you present on a freezing mountain the entire time.
If this had come out 15 years later there would be SO MUCh Evan & Brett Wattpad fanfic.