Some famous names
La Barre des Ecrins, le Rateau, les Bans, la Muzelle as well as (and especially) la Meije, are some of the famous names in the world of mountaineering.
Here, the goal isn’t to provide a list of what you can do in Oisans, that’s impossible, there are too many, but rather to arouse the curiosity of a visitor who is attracted to this vertical world.
Guide books, maps and plenty of experience are of the utmost importance before setting off alone.