I have realised that railways are rendered in a way that makes it really hard to see in from of the map background, depending on the shading and the surrounding features. However, they often form an integral part of transport in a ski resort (e.g. Zermatt, Wengen, etc...) or are important means of transport to the ski resorts. At the moment they are less visible than tracks or paths on the map. I would suggest changing the style to something dark, e.g. more similar to the way railways are rendered in the standard Mapnik OpenStreetMap style.
I have realised that railways are rendered in a way that makes it really hard to see in from of the map background, depending on the shading and the surrounding features. However, they often form an integral part of transport in a ski resort (e.g. Zermatt, Wengen, etc...) or are important means of transport to the ski resorts. At the moment they are less visible than tracks or paths on the map. I would suggest changing the style to something dark, e.g. more similar to the way railways are rendered in the standard Mapnik OpenStreetMap style.