description Cirque de Cilaos Overview
The Cirque de Cilaos is a dramatic volcanic caldera located on Réunion Island in the Indian Ocean. Formed within a collapsed caldera, it features steep slopes, lush tropical vegetation and unique geological formations. It’s notable for its demanding hiking trails attracting experienced trekkers and nature enthusiasts seeking challenging landscapes and diverse flora. The area's thermal springs offer another element of interest to visitors.
insights Ranking position
Cirque de Cilaos ranks #11 of 92 in the Cirque ranking, behind Titcomb Basin, ahead of Coire Mhic Fhearchair.
help Cirque de Cilaos FAQ
How do visitors access the Cirque de Cilaos on Réunion Island?
The cirque is accessed via a winding, highly scenic mountain road featuring hundreds of switchbacks and multiple tunnels. The drive itself requires passing through the famous Route des 400 Virages, or Road of 400 Bends. Due to its extreme isolation, it was historically accessible only by foot or mule.
What is the Cirque de Cilaos famous for producing locally?
The deep volcanic basin is renowned for its high-quality Cilaos wine, produced from grapes grown on steep terraced vineyards. The high altitude and unique microclimate create excellent conditions for viticulture. The town is also famous for its natural thermal hot springs.
What geological forces created the Cirque de Cilaos?
The cirque was formed by the collapse of a massive volcanic caldera on the dormant Piton des Neiges volcano. Subsequent centuries of heavy erosion caused by intense tropical rainfall further carved out the sheer cliffs and deep U-shaped valleys. The exposed rock layers clearly reveal the island's violent volcanic history.
What are the best hiking trails in the Cirque de Cilaos?
The most famous hike is the trek to Le Bras de Cilaos and the Pas de Bellecombe, offering incredible views of the jagged peaks. The GR R2 trail crosses directly through the cirque, connecting it to the other dramatic calderas of Réunion Island. Many of these trails require technical via ferrata gear to complete safely.
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