Paolo Avesani pointed me on this nice web application that allows the users to share nice alpine walking itineraries. One of the main feature is the ability to see a cartographic support for the itinerary description which makes more easy to follow (although I could not find an itinerary with working map).

The list something like 700 itineraries. I would be interested in knowing some more about it.

Tags: collaboration tools, information visualization, map algorithms, maps