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Visit of the Caves

1h from Lyon, Geneva or Annecy -  Ain - Mountains of Jura

Download our audioguide on your smartphone 

Discover a strange and exciting underground route shaped during the great ice ages. 

A 45 min to 1H30 walk from the burial point of an old river until its resurgence in the middle of a cliff on a belvedere overlooking the Cerdon’s valley and its vineyards.

Choose your visit:

French guided tour at fixed times, non guided tour or visit in the form of a tale for the youngest.



Map of the Caves
Plan des Grottes
visite-guidee

French Guided tour

Duration: 1 hour (+30 min Belvedere)

visite-en-autonomie

Visite en autonomie

Maximum 8 people / group - Download our audioguide on your phone (French, English, Dutch, Spanish).


visites-pour-les-petits

Visit for 4 - 6 years old

Specially dedicated to 4-6 year olds and their families.


Questions sur les Grottes
  • Can we take a stroller in the caves ?

    No because of the stairs! Please note that we lend baby carriers for free.

  • What is the temperature in the cave ?
    • The upper gallery is at 13/14 °C and then drops to around 10 °C at the end of the large hall. For the second part, the temperature drops to 4 °C for 5 minutes. On the belvedere, you will find the outside temperature.


    • It is the temperature differences and the elevation that make this second part of the visit more physical.

  • Why a 2-part visit?

      • The main part corresponds to the concreted gallery and the path constitutes a loop with departure and arrival at the reception of the site. For people ready for an additional ascent effort, it is possible, at the end of the upper gallery overlooking the large room, to continue independently to the belvedere. This overlooks the Cerdon’s valley and its vineyards.
      • This second part with a higher elevation and therefore on the initiative of each and own rhythm.
    Provide warm clothing for the visit of the caves (14°c to 4°c for 5/10 min) and comfortable shoes (return by a path in the undergrowth)
    The rains have no effect on the activities which can be done under shelter
    The Grottes du Cerdon are not subject to flooding