Caving · Piton de la Fournaise
The essentials
One tour, one operator, one fixed price: 55 € for 3 hours underground in the lava tubes of Piton de la Fournaise, led by Réunion mer et montagne in French and English. The physical level is "occasionally sporty", meaning expect crawling through narrow basalt passages and uneven volcanic terrain. Book directly with the operator if you want a small-group experience inside one of the most active volcanoes on Earth. Closed shoes and old clothes are non-negotiable.
The offer
Caving in the Lava tubes of the volcano of Piton de la Fournaise, Reunion Island
5.0 (402 reviews)Frequently asked questions
What's the most intense moment of the tour?
Crawling through tight lava tube passages where the ceiling drops and the volcanic rock closes in on all sides. The confined space and total darkness when headlamps go off are the two peak moments most participants remember.
Do you need to be afraid of the dark to worry about this activity?
If complete darkness triggers strong anxiety, this is worth thinking about. The lava tubes are pitch black without artificial light. The guide controls the lighting, and there are moments where darkness is used intentionally as part of the experience.
Is Piton de la Fournaise still an active volcano?
Yes, it is one of the most active volcanoes in the world and erupts regularly. The caving takes place in older, solidified lava tubes, not in active flow zones. The meeting point is located in the Grand Brûlé enclosure between Sainte-Rose and Saint-Philippe.
How did 402 people rate this tour?
The tour holds a 5/5 rating across 402 reviews, which is the highest possible score. That volume of reviews at a perfect score makes it one of the strongest-rated adventure activities on Reunion Island.
Best time to go
| Month | Temperature | Rainfall | Conditions |
|---|---|---|---|
| January | 14°C | 211.3 mm | Poor |
| February | 14.1°C | 252.2 mm | Poor |
| March | 13.1°C | 358 mm | Poor |
| April | 12.6°C | 243.8 mm | Poor |
| May | 10.9°C | 174.3 mm | Possible |
| June | 8.9°C | 153.6 mm | Poor |
| July | 7.8°C | 116.6 mm | Possible |
| August | 7.6°C | 169.9 mm | Poor |
| September | 8.8°C | 113.4 mm | Possible |
| October | 10.5°C | 66 mm | Good |
| November | 12°C | 109.2 mm | Possible |
| December | 13.4°C | 146.2 mm | Possible |
Practical info
Equipment
Wear clothes you don't mind destroying: the basalt walls and lava floor will scratch and stain anything. For a 3-hour "occasionally sporty" session underground, closed shoes with ankle support are mandatory and kneepads are strongly recommended if you own them.
Getting there
Meet at the car park of the 2001 lava flow on the RN2, between Sainte-Rose and Saint-Philippe, inside the Grand Brûlé enclosure on the eastern coast of Réunion Island.
See also
Caving elsewhere
Other activities in Piton de la Fournaise
Updated March 2026