It is considered one of the most beautiful canyons in Europe and maybe in the world. Descended in 7-2022 with ABC club de Lyon, during a big European Tour I did alone. 5.500km of driving in Italy (Dolomites & Modio Uginese), Switzerland (Ticino) and France (Corsica). Descent was facilitated by global warming. Intermediate and lower part descended. Water flow was considered low (lower part is rated v5a6IV) providing conditions for a fine and relaxed descent.
Water flow link: https://www.youtube.com/watch?v=sp6FtJfAHvM