Redrobes, thanks for the suggestion. That sounds like a very good idea and it would be ideal, honestly. Wilbur and Nasa data ... let's see about putting that into action!

I'm afraid I can't help you too much with snowlines though. There's only a little tiny glacier here though, since the highest peak is about 2900 metres and the weather, at least in my area, is still quite influenced by the mediterranean (i.e. very warm), but fortunately also by the mountains (i.e. wet and thus green). For photos of mountains, this site, Zaplana, should be chock full of them. It's mostly hiking trails, but there's also a lot of photos. Admittedly the site is a bit old and I'm not certain how maintained it is ... but, well. Otherwise googling something on the topic of "slovenske gore" should give you a lot of photos as well.