Mer de Glace Via Ferrata
Les Balcons de la Mer de Glace was not technically designed as a Via Ferrata, but due to the fixed equipment in place, is very similar to a one.
You should keep in mind that this route was graded as D (difficult) since it represents a high mountain itinerary and it contains ladders, moraine screes and boulders and glacier crossing.
However, not only experienced climbers can access the Mer de Glace Via Ferrata. The route is accessible to beginners as well, however, having to cross a glacier and the length of the route make it necessary to hire a competent guide.