Climbing in the Mont Blanc massif and the Chamonix Valley means compact rock, high mountains, superb granite and miles of gneiss. Crags are usually equipped with steel cables and pitons. Mountain routes may be partially equipped, but usually have at least abseil points in place.
Guide books are essential. The best ones are recommended at appropriate points in chamonix.net A climbing instructor is a great way to learn or tackle challenging routes. It can get hot. Guide books describe the orientation of the crag so plan the climb when it is in the shade.