Tourist sites in Isère: Sassenage et ses cuves

In the heart of the Vercors Regional Natural Park, the clear waters of the Furon, the freshness and tranquility of the underground world, will make you forget the time of a walk, the urban proximity. Located in the middle of a preserved fauna and flora, the Vats can be discovered through guided tours, thematic animations and other speleological walks with the Accrogrotte®. You can explore the heart of the Vercors and discover the legend of the Fairy Melusine in this underground universe where time has no hold...

Open from 01/05 to 31/10.
The visit is subject to weather conditions (floods). Ask for information before you arrive.

More information on their website

And if I go by bus ?

Take the line T64 Grenoble - Engins - Villard-de-Lans and get off at the stop "Place de la Libération" in Sassenage.