I wonder if anybody could be interested in a cabride video of the railway line Tirano-Sondrio-Colico-Varenna-Lecco-Milano. It is addressed to railway buffs, but gives you an idea about the landscape around the line.
https://www.youtube.com/watch?v=x6wHFUsL9-k
The stop at Varenna station, just to have an idea how it looks like, is at 1:17:51, then the train leaves direction Milano.