Bassin Bleu Natural Pool (Saint-Paul)

Bassin Bleu is a natural freshwater pool in the Ravine Saint-Paul, in the commune of Saint-Paul on Réunion's north-west coast, about 10 km north of Saint-Gilles. It is not a conventional beach: there is no sand or ocean surf, and the attraction is a deep pool of cool, blue-green water set among volcanic rock and tropical vegetation. Water clarity is generally good, though it changes after rain, and the pool is sheltered rather than open, with rock walls enclosing it. Swimming here means a refreshing dip in fresh water, which contrasts with the salt water of the lagoon beaches. The trailhead sits behind the Saint-Paul cemetery, where visitors can park for free, and from there a walk of about 45 minutes each way follows the ravine. The path is a rough trail with rocks and some uneven sections, so sturdy shoes are essential. The atmosphere is quiet and adventurous: walkers, families with older children and photographers make the trip, and the pool is rarely crowded on weekdays. There are no facilities at all, with no toilets, shops or lifeguards, so visitors must carry water, snacks and swimwear, and take all waste back out. There is no public transport to the trailhead, so a car or taxi is needed to reach the cemetery. The most important safety issue is flash flooding. The ravine can fill suddenly after heavy rain, even if the weather at the pool looks fine, so visitors should avoid the walk during or after rainfall and check forecasts. The best season is May to October, when the weather is drier and the water level is more stable. Visitors should not jump from rocks unless the depth is known, and should avoid going alone. The pool is rated 4.5 and rewards effort with a calm natural swim away from the coastal crowds.