Renowned for its peaks and crystal-clear lakes, Haute-Savoie also holds hidden treasures underground. For lovers of exploration, nature, and caving, here is a selection of the most beautiful caves to visit in Haute-Savoie. Between mysterious galleries, underground waterfalls, and breathtaking landscapes, these cavities offer a fascinating immersion into the underground world.
1. Grotte d’Orjobet – Collonges-sous-Salève
Located at 1300 meters altitude in the Salève massif, the Orjobet cave is a historic limestone cavity. Accessible by an 11 km geological hike starting from Pas de l’Échelle, it offers exceptional views of the Geneva basin. Classified as a geosite, it attracts both hikers and lovers of spectacular rock formations.
Practical information :
- Access via hiking trail (4 hours round trip)
- Bring sturdy shoes and water
- Not developed: headlamp recommended
2. Grotte des Sarrasins – Veyrier-du-Lac
Overlooking the Lake Annecy at more than 770 m altitude, the Sarrasins cave is accessible after a walk of about 3.5 km from Veyrier-du-Lac. This natural site is known for its magnificent panorama over the lake, perfect for photographers and sunset lovers. The interior of the cave is modest but its location makes it a must-see spot.
Visiting tips :
- Easy to moderate hike, allow 1h30 round trip
- Non-slip shoes recommended
- Do not go in wet weather
3. Grotte du Grand Perthuis – Talloires-Montmin
Accessible only by water from the Lake Annecy, this small cave nestled in the cliffs is a perfect stop during a kayak or paddle outing. Discreet and little frequented, it allows for a refreshing and intimate exploration, ideal in summer.
To bring :
- Departure from Angon or Talloires
- Bring a lamp if you wish to enter the cavity
- Water temperature is cold, even in summer
4. Grotte et Cascade de Seythenex – Faverges
This is the only cave developed for the public in Haute-Savoie. It offers a 40-minute guided tour followed by access to an impressive 45 m high waterfall. Very popular with families, the site also offers zip lines and adventure trails in the heart of nature.
Useful information :
- Site open from May to September
- Reservation recommended in summer. Tel.: 04 50 44 55 97
- Easy access, suitable for all ages
- Address: 576 route des Grottes – 74210 Faverges-Seythenex
5. Grotte de Balme – Magland
With more than 5 km of galleries, the Balme cave is a major spot for caving in Haute-Savoie. Accessible with a guide, it houses stalactites, small lakes, and winding passages. Guided caving visits allow exploration of this cavity safely.
To know :
- Altitude: 725 m
- Guided outings to be booked with local clubs. Contact Spéléo Canyon 74 (contact@speleo-canyon-74.com) or Monté Médio (contact@montemedio.com) for professional guidance.
- Equipment provided during excursions
6. Grotte de la Diau – Fillière (Thônes)
Located in the heart of the Bornes massif, this cave is accessible after an hour’s walk. It houses an underground river, and several large natural chambers. It is reserved for experienced cavers or small guided group outings.
Key points :
- 1 hour approach hike
- Do not go in rainy weather
- Supervision essential for visits.
7. Grotte de Bange – Allèves
Located in the Bauges massif, this little-known cave is worth the detour. After a short hike (30 to 40 min), it reveals a surprising small underground lake. A cavity accessible to lovers of calm and raw nature, provided they are well equipped.
Recommendations :
- Hiking shoes and headlamp mandatory
- Bring warm clothes even in summer
- Ideal for an exploration duo or small group
Tips for exploring the caves of Haute-Savoie
Caves are fragile and potentially dangerous environments. To explore them safely:
- Prefer guided tours for undeveloped sites
- Strictly follow the environmental instructions
- Do not leave any waste and do not touch the formations
- Always inform a loved one before going on an exploration
Whether you are a caving enthusiast or simply curious, the caves of Haute-Savoie offer an original and fascinating way to discover the region. Between astonishing geological formations, sites developed for the whole family, and wilder cavities for adventurers, each cave tells a story… it’s up to you to explore it.
