Sources Thermales de Grand-Bassin
Entre-Deux, La Réunion
- Location
- Entre-Deux, La Réunion
- Water type
- bicarbonate
- Temperature
- 35 °C
- pH
- 7.2
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonateSodiumCalciumMagnésiumCO2 volcanique
The Grand-Bassin hot springs lie deep in the Grand-Bassin cirque near Entre-Deux, Réunion Island, reached after about a two-hour hike. The bicarbonate water emerges at 35°C amid cryptomeria trees, with the Piton des Neiges peak visible in the distance — a secluded spot for a relaxing break in nature.
Insider tip — Grand-Bassin is accessible only on foot (a 2-hour descent from Entre-Deux) — one of the most secret places in Réunion, inhabited by a few families with no road or car. The thermal springs there are the ultimate reward of an exceptional hike.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 35 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.