Grotte-émergence de Saint-Maurin

Grotte-émergence de Saint-Maurin is a resurgence cave in the commune of La Palud-sur-Verdon, in the Alpes-de-Haute-Provence department, right in the heart of the Gorges du Verdon. Its outflow sits at the foot of the Barbin cliff, directly above the Verdon canyon, where centuries of spring water have carved a striking staircase of limestone tufa terraces.

What exactly is a resurgence cave?

A resurgence is the point where an underground karst system releases its water back to the surface. Here the flooded network drops roughly 42 metres in vertical extent with a total surveyed length of about 250 metres, and the section between -7 and -42 metres is entirely underwater. That submerged stretch can only be entered by trained cave divers using autonomous breathing gear — for everyone else, the show happens above ground, in the terraces and waterfalls fed by the spring.

What will you actually see?

Water pours out of the rock face at several points, cascading down tufa terraces built up over centuries of mineral deposit. The largest of these waterfalls is visible even from the D952 departmental road and reaches close to 15 metres in height in places. The site's charm lies in the contrast: cool, damp, green terraces set against the dry, rocky slopes typical of the surrounding gorge. The reserve is generally split into two areas known locally as "Saint-Maurin haut" (upper) and "Saint-Maurin bas" (lower), linked by marked paths.

How do you get there and what are the rules?

The most straightforward approach starts from the village of Rougon, following a marked trail across varied terrain — a round trip of roughly two hours on foot. Paths are marked with white and green arrows plus yellow waymarks for shorter loops. Entry to the reserve is free, but walking is only permitted on the marked trails; swimming, camping, lighting fires, and collecting anything from the site are all strictly prohibited. Visitors who want a deeper look at the site's natural and historical layers are encouraged to join a guide accredited by the Maison des Gorges.

Why is the site protected?

Since 30 October 2009, the roughly 26-hectare Saint-Maurin area has held the status of Regional Nature Reserve. Management is shared between the municipality of La Palud-sur-Verdon, the Conservatoire d'espaces naturels de Provence-Alpes-Côte d'Azur, and the Parc naturel régional du Verdon. The goal is to protect the tufa-forming ecosystem and the plant and animal life it supports, both of which are sensitive to heavy foot traffic.

What history lies behind Saint-Maurin?

Long before it became a nature reserve, Saint-Maurin held a Provençal "cella" — a rudimentary hermitage-abbey established from the 4th century, with cells carved directly into the soft tufa rock. Religious settlement here may date back to the 5th century, linked to the Abbey of Lérins. Two larger caves later converted into troglodyte dwellings, known as the Grande Baume Murale, already appear in a 1611 will belonging to the lord of La Palud. Archaeological digs running since 2020 have uncovered the remains of two chapels that were rebuilt several times through the Middle Ages.

Frequently asked questions

Can visitors go inside the cave? No — the flooded section is reserved for experienced cave divers with the right equipment. What visitors experience is the surface show: the cascades and tufa terraces.

How long does the hike take? From Rougon, the round trip is about two hours over uneven ground.

Is there an entrance fee? No, access to the reserve is free, though you must stay on the marked paths.

Can you swim in the waterfalls? No — swimming, camping, fires, and collecting natural material are all banned within the reserve.

Why is the site historically significant? It preserves traces of an early Christian hermitage and later troglodyte dwellings, with ongoing excavations since 2020 revealing chapel remains rebuilt across the Middle Ages.