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.

Interview France Bleu Isère - 25/03/2023
speleodentdecrolles_France-3-Alpes_Traversee-glaz-annette
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victor9223 profile picture
victor9223
29 Août 2026
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N'hésitez pas une seconde ! Mes amis m'ont offert la sortie du solitaire pour mes 30 ans : l'un de mes meilleurs souvenirs de cette année. Cyrille est un excellent guide, aucune crainte à avoir avec lui, il s'adapte à votre niveau, vous encourage tout le long de la sortie, veille à votre sécurité avec calme et bienveillance. Les instructions sont claires. Les explications sur la dents de Crolles sont intéressantes. L'impression de passer une journée entre amis avec lui ! Très agréable ! Merci encore pour ce moment Victor
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Gaëtan Labouche profile picture
Gaëtan Labouche
20 Août 2026
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Merci à Cyrille pour cette super sortie spéléo ! L'organisation était parfaite, et le parcours au delà de nos attentes en termes de diversité d'obstacles (marche, ramping, petite escalade, rappels...). Le plus : un moment de fraîcheur sous terre en pleine canicule !
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Teun Vanrooij profile picture
Teun Vanrooij
17 Août 2026
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I had an absolutely amazing experience exploring the Galerie du Solitaire with Cyrille! It was a truly unforgettable adventure. Cyrille is a fantastic guide—he is extremely kind, highly experienced, and completely trustworthy. I felt 100% safe under his guidance at all times, even during the more technical rope sections and climbs. If you are looking for an incredible caving expedition with a true professional, I highly recommend him. Thank you for a great day!
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Robin Rg profile picture
Robin Rg
13 Août 2026
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​Une expérience tout simplement exceptionnelle ! J'ai passé 5 heures sous terre avec Cyrille pour une sortie spéléo en solo, et c'était incroyable. Entre la progression sur corde (rappels, remontées), les passages plus étroits à faufiler et la découverte de paysages souterrains immenses, tout était réuni pour en prendre plein les yeux. ​J'avais une petite appréhension au départ, mais Cyrille sait parfaitement mettre en confiance. Et cerise sur le gâteau : c'est l'activité parfaite pour fuir la canicule et profiter de la fraîcheur en été ! Je ressors avec une seule envie : y retourner très vite avec des amis. Je recommande les yeux fermés !
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Clément profile picture
Clément
26 Juillet 2026
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Cyrille est un très bon guide qui sait s’adapter à son public (1ere experience en spéléo). Nous avons passé une très bonne journée sous terre. Vous pouvez compter sur Cyrille pour vous faire visiter les tréfonds de la dent de Crolles qu'il connait comme sa poche.
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Andy Battentier profile picture
Andy Battentier
23 Juin 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex vérifie que la source originale de l'avis est Google.
Super sortie avec Cyrille, très pro, passionné et sécurisant. On a déjà envie d’y retourner!
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Lorraine Nicolas profile picture
Lorraine Nicolas
16 Juin 2026
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Superbe traversée avec Cyrille, nous avons passé une journée incroyable, très belle découverte Accompagnement au top, dans la bonne humeur, professionnalisme et sécurité Allez-y sans hésiter ! À très bientôt !! Merci Cyrille :) Léo & Lorraine
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Allan MARIA profile picture
Allan MARIA
31 Mai 2026
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Un grand merci à Cyrille pour cette belle journée sous terre. Parcours varié et ludique. La prochaine fois, je n'oublierai pas le café ;-)
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victor CRAVERO profile picture
victor CRAVERO
31 Mai 2026
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Très pro et très agréable, on a passé une super journée avec Cyrille ! Hâte de faire une nouvelle sortie ensemble. On recommande vraiment !
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Arthur Closet profile picture
Arthur Closet
17 Novembre 2025
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex vérifie que la source originale de l'avis est Google.
Une excellent journée avec Cyrille. Une traversée Glaz-Annette magnifique et variée, des rappels, des sections rampantes ! 7h sous terre qui passe très vite et durant lesquelles on ne s'ennuie pas !

CAVES TOUR

Bivouac

Difficulty :
Rated 0 out of 5
Walkers, grab your poles! A 2-day tour, completely self-sufficient, with an underground bivouac, to discover 8 of the 11 major entrances to the Dent network.

FROM €206

History & geology

Of the Guiers Mort

Difficulty :
Rated 0 out of 5
Cultural and educational, this non-sporting caving outing is aimed at anyone interested in discovering aspects of the Dent that are little-known to the general public.

FROM €20

DISCOVERY

GLAZ ROUND TRIP

Difficulty :
Rated 1 out of 5
A horizontal underground walk, accessible to all, ideal for a first foray inside the Dent. Great for families and friends!

FROM €60

DISCOVERY

Grotte Chevalier

Difficulty :
Rated 1.4 out of 5
Who would have thought that behind its modest entrance lies a room of extraordinary dimensions? Welcome to the Grotte Chevalier, welcome to gigantism.

FROM €70

DISCOVERY

Grotte Annette

Difficulty :
Rated 1.4 out of 5
Not far from the Grotte Chevalier, the Grotte Annette opens the door to a long journey through ever-changing landscapes, all the way to the mythical Puits de la Gnôle.

FROM €80

Technical

Le Glaz par l’Ogive

Difficulty :
Rated 2 out of 5
An underground loop consisting of descents and ascents. For those who want to test their mettle against the verticals of the Dent. Thrills guaranteed!

FROM €85

Sporty

La cascade Elisabeth

Difficulty :
Rated 2.5 out of 5
From the Guiers Mort, it’s a sporty, fun round trip through the galleries of the Labyrinth. At the end of the maze, the Cascade Élisabeth awaits you!

FROM €90

Sporty

Galerie du Solitaire

Difficulty :
Rated 3 out of 5
From the Guiers Mort, the great Solitaire and Tritons galleries open up to you. Set off to conquer this itinerary, a veritable adventure playground!

FROM €102

Traverse

Glaz – Annette

Difficulty :
Rated 4 out of 5
This is the most famous and coveted traverse of the Dent de Crolles! A magnificent underground route and a spectacular final exit above the valley!

FROM €115

Traverse

Glaz – Guiers

Difficulty :
Rated 4.3 out of 5
Verticals, large galleries and meanders are all on the programme for this crossing. It’s an extraordinary itinerary all the way to the huge porch of the Guiers Mort.

FROM €135

Traverse

P40 – glaz

Difficulty :
Rated 4.5 out of 5
From the summit, at an altitude of 1935 m, you can reach the trou du Glaz 300 m below! A very vertical traverse, in the footsteps of the 1st explorers of the Dent.

FROM €155

Ultimate

Le Collecteur

Difficulty :
Rated 5 out of 5
The most extraordinary foray into the Dent. Follow the galleries and shafts to reach the Guiers Mort collector, right in the heart of the mountain!

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

Difficulty :
Rated 0 out of 5
Walkers, grab your poles! A 2-day tour, completely self-sufficient, with an underground bivouac, to discover 8 of the 11 major entrances to the Dent network.

FROM €206

HISTORY & GEOLOGY

OF THE GUIERS MORT

Difficulty :
Rated 0 out of 5
Cultural and educational, this non-sporting caving outing is aimed at anyone interested in discovering aspects of the Dent that are little-known to the general public.

FROM €20

DISCOVERY

GLAZ ROUND TRIP

Difficulty :
Rated 1 out of 5
A horizontal underground walk, accessible to all, ideal for a first foray inside the Dent. Great for families and friends!

FROM €60

DISCOVERY

Grotte Chevalier

Difficulty :
Rated 1.4 out of 5
Who would have thought that behind its modest entrance lies a room of extraordinary dimensions? Welcome to the Grotte Chevalier, welcome to gigantism.

FROM €70

DISCOVERY

Grotte Annette

Difficulty :
Rated 1.4 out of 5
Not far from the Grotte Chevalier, the Grotte Annette opens the door to a long journey through ever-changing landscapes, all the way to the mythical Puits de la Gnôle.

FROM €80

Technical

Le Glaz par l’Ogive

Difficulty :
Rated 2 out of 5
An underground loop consisting of descents and ascents. For those who want to test their mettle against the verticals of the Dent. Thrills guaranteed!

FROM €85

SPORTY

La cascade Elisabeth

Difficulty :
Rated 2.5 out of 5
From the Guiers Mort, it’s a sporty, fun round trip through the galleries of the Labyrinth. At the end of the maze, the Cascade Élisabeth awaits you!

FROM €90

SPORTY

Galerie du Solitaire

Difficulty :
Rated 3 out of 5
From the Guiers Mort, the great Solitaire and Tritons galleries open up to you. Set off to conquer this itinerary, a veritable adventure playground!

FROM €102

Traverse

Glaz – Annette

Difficulty :
Rated 4 out of 5
This is the most famous and coveted traverse of the Dent de Crolles! A magnificent underground route and a spectacular final exit above the valley!

FROM €115

Traverse

Glaz – Guiers

Difficulty :
Rated 4.3 out of 5
Verticals, large galleries and meanders are all on the programme for this crossing. It’s an extraordinary itinerary all the way to the huge porch of the Guiers Mort.

FROM €135

Traverse

P40 – glaz

Difficulty :
Rated 4.5 out of 5
From the summit, at an altitude of 1935 m, you can reach the trou du Glaz 300 m below! A very vertical traverse, in the footsteps of the 1st explorers of the Dent.

FROM €155

Ultimate

Le Collecteur

Difficulty :
Rated 5 out of 5
The most extraordinary foray into the Dent. Follow the galleries and shafts to reach the Guiers Mort collector, right in the heart of the mountain!

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

Vidéos

Management and organisation

Cyrille - Professional Caving Guide
Diploma no. : DEARA190015

SIRET : 423 846 161 00036

DDCS professional licence : 03819ED0144

Professional CL : AN3S n° 675047304

speleodentdecrolles.fr
speleo-campus.com
7holes.eu

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.

Paperback format : €9.97

Ebook format : €4.95

Available on Amazon.fr

Paperback format : €12.65

Ebook format : €6.95

Available on Amazon.fr

GIFT CARDS

Would you like to offer a caving trip to someone close to you?

Choose one of our outings and contact us.

Bon cadeau spéléo dent de crolles

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.

Paperback format : €9.97

Ebook format : €4.95

Available on Amazon.fr

Paperback format : €12.65

Ebook format : €6.95

Available on  Amazon.fr

GIFT CARDS

Would you like to offer a caving trip to someone close to you?

Choose one of our outings and contact us.

Contact us