This route takes you first to the Dent summit, with its uninterrupted views over the Grenoble valley and the Belledonne mountain range.

We will then enter the underground network via the highest entrance currently known, at an altitude of 2022 metres. The very vertical underground route proposed here will take us to an immense underground chamber of unimaginable dimensions from the outside. This is where we will reach the outside, on the east face of the massif. A final look at the expanse of the valley will precede our return to the morning’s starting point.

It will complete this route, which corresponds to stage 3 of the 7holes Challenge.


Difficulty :


Because of its difficulty, this route requires knowledge of certain caving techniques for progressing on a rope. Failing that, a preliminary run or a training day will enable you to acquire these techniques. Don’t hesitate to contact us so that we can assess this together.




EQUIPMENT & Management

All caving equipment (helmets, wetsuits, harnesses, etc.) is provided.

This route is fully managed by 1 Professional Caving Guide.


Do you have one or more preferred dates?
Contact us to let us know your availability.


Guided group package: €489
€295 / person
€230 / person
€177 / person

Booking - 7holes : Hole 4 - Hole 5