Want to see the Dent from the inside?
Caving trips for all levels at the Dent de Crolles, led by Professional Caving Guides.
Envie de voir la Dent de l'intérieur?
Sorties spéléo tous niveaux, à la Dent de Crolles, par Guides diplômés d’État.
Want to see the Dent from the inside?
Caving trips for all levels at the Dent de Crolles, led by Professional Caving Guides.
Publié sur cyril roux23 Octobre 2025Trustindex vérifie que la source originale de l'avis est Google. Une expérience spéléo très complète et variée : souvenir impérissable ! Une longue traversée de part en part de la montagne en 8H casse-croûte compris, ça marque… surtout quand c’est la 150ième pour Cyrille et la 50ième soufflée pour Cyril. 🤪 Notre petite équipée a pu progresser sereinement, entre de bonnes mains, très pro, pédagogiques et rassurantes. Un plaisir !Publié sur Rémy Hilaire20 Octobre 2025Trustindex vérifie que la source originale de l'avis est Google. Super expérience, la fait de pouvoir traverser la dent est incroyable ! Cyrille est pédagogue et très sympa. Je recommande👍Publié sur Frantz Bellucci7 Octobre 2025Trustindex vérifie que la source originale de l'avis est Google. Un super pro pour une super sortie. De la découverte et du sport dans un cadre naturel incroyable. Je recommande à 100%Publié sur Mathieu C30 Septembre 2025Trustindex vérifie que la source originale de l'avis est Google. Super guide, traversée mythique !Publié sur Francois Kuhn22 Août 2025Trustindex vérifie que la source originale de l'avis est Google. Super journée que cette traversée du Glaz-Annette. Cadeau pour mes 64 ans, je suis vraiment heureux de l'avoir faite, beaux souvenirs.Très bons conseils de Cyrille pour le choix de la sortie, sa durée et le niveau sportif. Et puis il faut le dire : Cyrille est pédagogue, patient, rassurant et encourageant. Bref, à faire absolument !Publié sur F S13 Août 2025Trustindex vérifie que la source originale de l'avis est Google. Super expérience ! Je recommande. Parfois on pense que ça ne passe pas.... mais Cyrille a raison, ça passe 💪Publié sur Seb Perez-D30 Juillet 2025Trustindex vérifie que la source originale de l'avis est Google. Nous avons visité les grottes Annette et Chevalier sous la conduite experte, intéressante et bienveillante de Cyrille, et nous recommandons chaudement l’expérience.Publié sur Emmanuelle Fiol29 Juillet 2025Trustindex vérifie que la source originale de l'avis est Google. Super moment dans la traversée de la dent de crolles, Cyrille est un bon guide spéléo, pro et décontracté ! Bonne équipe présente avec du soutient et de la rigolade, à refairePublié sur Marie Laugié27 Juillet 2025Trustindex vérifie que la source originale de l'avis est Google. On m'a offert ce cadeau pour 2 personnes. Un peu réticente initialement à l'idée de passer 8h sous terre, j'ai finalement accepté le défi. Et j'en suis très heureuse. J'ai passé une excellente journée dans les entrailles de la dent de Crolles en compagnie de Cyrille et mon groupe. Le parcours est varié et en met plein la vue. Les explications de Cyrille sont claires tant en amont que pendant la traversée. Merci Cyrille et je reviendrai sûrement !Publié sur Benny ZY27 Juillet 2025Trustindex vérifie que la source originale de l'avis est Google. Une expérience incroyable avec un guide bienveillant ! Merci beaucoup Cyrille !
CAVES TOUR
Bivouac
- Duration: 2 days
- Departure : Perquelin
- From 15 years old
FROM €206
History & geology
Of the Guiers Mort
- Duration: 1/2 day
- Departure : Perquelin
- From 10 years old
FROM €20
DISCOVERY
GLAZ ROUND TRIP
- Duration: full day
- Departure : Trou du Glaz
- From 10 years old
FROM €60
DISCOVERY
Grotte Chevalier
- Duration: full day
- Departure : Grotte Chevalier
- From 10 years old
FROM €70
DISCOVERY
Grotte Annette
- Duration: full day
- Departure : Grotte Annette
- From 10 years old
FROM €80
Technical
Le Glaz par l’Ogive
- Duration: full day
- Departure : Trou du Glaz
- From 15 years old
FROM €85
Sporty
La cascade Elisabeth
- Duration: full day
- Departure : Guiers Mort
- From 15 years old
FROM €90
Sporty
Galerie du Solitaire
- Duration: full day
- Departure : Guiers Mort
- From 15 years old
FROM €102
Traverse
Glaz – Annette
- Duration: full day
- Departure : Trou du Glaz
- From 15 years old
FROM €115
Traverse
Glaz – Guiers
- Duration: full day
- Departure : Trou du Glaz
- From 15 years old
FROM €135
Traverse
P40 – glaz
- Duration: full day
- Departure : P40 (summit)
- From 15 years old
FROM €155
Ultimate
Le Collecteur
- Duration: full day
- Departure : Guiers Mort
- From 15 years old
FROM €205
The Ultra Caving Run is the flagship route: it consists of a series of 4 underground traverses of the Dent, interspersed with 4 surface hikes. 2 underground bivouacs are also on the programme for this unrivalled raid. But before tackling this … read more
FROM €1188 – Duration : 5 days
The Challenge is the big brother of the Ultra Caving Run. After a warm-up day, we’ll run the same route as the Ultra Caving Run, but over 4 days. The distances have been increased, as have the gradients, because each evening you’ll … read more
FROM €775 – Duration : 5 days
This is stage 1 of the 7holes Challenge and probably the most technical. A long walk will first take us to the edge of the Dent summit, passing at an altitude of 2,000 metres. Then there’s a magnificent subterranean crossing … read more
FROM €209 – Duration : 1 day
After a beautiful 2-hour walk, we will enter the Dent network via its lowest entrance: the Guiers Mort and its thousand-year-old porch. We will then take an unusual underground route that links 2 of the most beautiful … read more
FROM €262 – Duration : 1 day
This route takes you first to the Dent summit, with its uninterrupted view over the Grenoble valley and the Belledonne mountain range. We will then enter the underground network via the highest entrance currently known, at 2022 metres above sea level … read more
FROM €177 – Duration : 1 day
This route corresponds to stage 4 of the 7holes Challenge, the shortest, but with a very varied profile. After a beautiful 3km approach to the middle of the Dent summit, the entrance opens up to us in the ground: it’s our entry pit. We’ll make our way … read more
FROM €149 – Duration : 1 day
CAVES TOUR
Bivouac
- Duration: 2 days
- Departure : Perquelin
- From 15 years old
FROM €206
HISTORY & GEOLOGY
OF THE GUIERS MORT
- Duration: 1/2 day
- Departure : Perquelin
- From 10 years old
FROM €20
DISCOVERY
GLAZ ROUND TRIP
- Duration: full day
- Departure : Trou du Glaz
- From 10 years old
FROM €60
Grotte Chevalier
- Duration: full day
- Departure : Grotte Chevalier
- From 10 years old
FROM €70
Grotte Annette
- Duration: full day
- Departure : Grotte Annette
- From 10 years old
FROM €80
Technical
Le Glaz par l’Ogive
- Duration: full day
- Departure : Trou du Glaz
- From 15 years old
FROM €85
SPORTY
La cascade Elisabeth
- Duration: full day
- Departure : Guiers Mort
- From 15 years old
FROM €90
SPORTY
Galerie du Solitaire
- Duration: full day
- Departure : Guiers Mort
- From 15 years old
FROM €102
Traverse
Glaz – Annette
- Duration: full day
- Departure : Trou du Glaz
- From 15 years old
FROM €115
Traverse
Glaz – Guiers
- Duration: full day
- Departure : Trou du Glaz
- From 15 years old
FROM €135
Traverse
P40 – glaz
- Duration: full day
- Departure : P40 (summit)
- From 15 years old
FROM €155
Ultimate
Le Collecteur
- Duration: full day
- Departure : Guiers Mort
- From 15 years old
FROM €205
The Ultra Caving Run is the flagship route: it consists of a series of 4 underground traverses of the Dent, interspersed with 4 surface hikes. 2 underground bivouacs are also on the programme for this unrivalled raid. But before tackling this … read more
FROM €1188 – Duration : 5 days
The Challenge is the big brother of the Ultra Caving Run. After a warm-up day, we’ll run the same route as the Ultra Caving Run, but over 4 days. The distances have been increased, as have the gradients, because each evening you’ll … read more
FROM €775 – Duration : 5 days
This is stage 1 of the 7holes Challenge and probably the most technical. A long walk will first take us to the edge of the Dent summit, passing at an altitude of 2,000 metres. Then there’s a magnificent subterranean crossing … read more
FROM €209 – Duration : 1 day
After a beautiful 2-hour walk, we will enter the Dent network via its lowest entrance: the Guiers Mort and its thousand-year-old porch. We will then take an unusual underground route that links 2 of the most beautiful … read more
FROM €262 – Duration : 1 day
This route takes you first to the Dent summit, with its uninterrupted view over the Grenoble valley and the Belledonne mountain range. We will then enter the underground network via the highest entrance currently known, at 2022 metres above sea level … read more
FROM €177 – Duration : 1 day
This route corresponds to stage 4 of the 7holes Challenge, the shortest, but with a very varied profile. After a beautiful 3km approach to the middle of the Dent summit, the entrance opens up to us in the ground: it’s our entry pit. We’ll make our way … read more
FROM €149 – Duration : 1 day
Management and organisation
Les Carnets de la Dent de Crolles
What about crossing the mountains? Can we do that? Of course it is!
Les Carnets de la Dent de Crolles takes you on a journey through the Chartreuse massif – near Grenoble – to the heart of the Dent de Crolles and its 70 kilometres of underground galleries.
The author, a professional caving guide-instructor, shares with you not only the stories he has told of his many journeys, but also the unique stories of the many generations of explorers who, for over a century, have continued to challenge the unknown to make it accessible.
GIFT CARDS
Would you like to offer a caving trip to someone close to you?
Choose one of our outings and contact us.
Les Carnets de la Dent de Crolles
What about crossing the mountains? Can we do that? Of course it is!
Les Carnets de la Dent de Crolles takes you on a journey through the Chartreuse massif – near Grenoble – to the heart of the Dent de Crolles and its 70 kilometres of underground galleries.
The author, a professional caving guide-instructor, shares with you not only the stories he has told of his many journeys, but also the unique stories of the many generations of explorers who, for over a century, have continued to challenge the unknown to make it accessible.
GIFT CARDS
Would you like to offer a caving trip to someone close to you?
Choose one of our outings and contact us.





