The Valley of marvels,
in the french Parc national du Mercantour,
is the most easily accessible, in summer, through :

- the Roya valley
  From St Delmas de Tende: follow the Casterino road.
  2 possible rambles starts :
  - from Casterino
  - from the Lake of Mesches 

- The Gordolasque Valley
  road access by Belvédère; then the Pas de l'Arpette footpath.