Pitons, cirques and remparts of Reunion Island Nature Reserve

Address: Pitons, cirques and remparts areas, Réunion Island (various sites across Réunion, no single address)

The Pitons, cirques and remparts of Réunion Island are a volcanic and mountainous landscape on the French Indian Ocean island of Réunion, notable for steep volcanic peaks, deep cirques and dramatic cliffs. The property is a UNESCO World Heritage site for its geology and biodiversity.

Key features include the extinct summit Piton des Neiges at about 3,070 meters and the active volcano Piton de la Fournaise at about 2,632 meters, plus three major cirques - Mafate, Salazie and Cilaos - that form large erosional amphitheaters. Hiking, volcanic observation, and visits to remote mountain villages are primary activities, with a network of trails and viewing points across the interior.

Réunion’s landscape is the product of volcanic activity over millions of years followed by intense erosion that formed the cirques and remparts. The island’s geological formation and long-term ecological processes are the basis for its World Heritage designation.

The site covers much of the central highlands of Réunion Island in the western Indian Ocean; access is by road from coastal towns, with trailheads and mountain huts serving hikers and climbers.

• Weather and clothing: The property combines volcanic peaks and three deep cirques; highland weather can change rapidly so carry warm, waterproof clothing for hikes.
• Access and logistics: Many of the island’s trails require good fitness; some cirque villages are reached only on foot or by helicopter during certain seasons.

What to See#

• Piton des Neiges: Piton des Neiges, the island’s highest peak at about 3,070 meters, formed by an extinct shield volcano and offering highland habitats.
• Piton de la Fournaise: Piton de la Fournaise, an active shield volcano rising to about 2,632 meters that is monitored for eruptions and forms dramatic lava landscapes.
• Cirques (Mafate, Salazie, Cilaos): The three large cirques - Mafate, Salazie and Cilaos - are deep erosional amphitheaters carved into the island’s interior, each with distinct villages and access trails.

• Check Parc National de la Réunion notices for trail closures and volcanic activity updates before you go, especially if you plan to approach Piton de la Fournaise - access can be restricted for safety.
• Start mountain hikes at dawn to avoid afternoon cloud buildup and to benefit from clearer views of the Pitons and cirques; parking and trailheads can fill up later in the day.
• Remember that Mafate is only reachable on foot or by helicopter; if you want to explore the cirques away from road access, arrange trekking routes and overnight lodging well in advance.