Bassin des Aigrettes, Natural pool in Ravine Saint-Gilles, Reunion Island, France.

The Bassin des Aigrettes is a pool of dark green water on the Ravine Saint-Gilles, a river that flows into the Indian Ocean in the commune of Saint-Paul. A white waterfall drops in two tiers down a face of stacked brown and grey rock into the pool, with thinner streams running down the right side and green vegetation along the top edge. It lies downstream of the Bassin Malheur and upstream of the Bassin Cormoran.

This pool developed over centuries through volcanic activity and water erosion that carved out the gorge and its basins. The Saint-Gilles stream shaped the landscape, creating the natural water system visitors see today.

The pool takes its name from the aigrettes, herons once seen along the Ravine Saint-Gilles. It lies in the stream's course between the Bassin Malheur upstream and the Bassin Cormoran downstream, in the commune of Saint-Paul. The waterfall drops in two tiers over blocky brown and grey rock into dark green water.

The walk to the pool takes about 45 minutes from the outdoor theater parking area and follows a canal path. Wear proper hiking shoes because the terrain is often wet and uneven.

The pool lies on the Ravine Saint-Gilles, the stream that flows into the Indian Ocean; upstream is the Bassin Malheur and downstream the Bassin Cormoran. The waterfall drops in two tiers over stacked brown and grey rock, with thinner streams running down the right side.