Bernina Railway connects Tirano (Italy) to Sankt Moritz (Switzerland), climbing for 1.800m up from Tirano and touching an altitude of 2.200m over the sea level. Last weekend I've spent a day traveling on it, stopping at the most beatiful stations. Here the link to the video I took. Only some scenes are taken with the Air 2s, the remaining with an iPhone, but I think the overal result could be interesting if you like winter landscapes.