The Bois de Cise was transformed from a wild wooded valley into an upscale seaside resort in 1898.
Writer Victor Hugo visited the area and described the surrounding scenery as a 'sublime' landscape in his travel writings.
The valley contains a rare mix of coastal and woodland flora due to its sheltered position between the cliffs.
During the early 20th century, the resort featured a luxury hotel and tennis courts, most of which have since disappeared or been repurposed.
The beach is composed of flint pebbles, common to the Picardy coast, which have been smoothed by the English Channel currents.
The site is a registered sensitive natural area, which strictly regulates construction to protect the surrounding woodland ecosystems.
Plage du Bois de Cise is a secluded pebble beach nestled within a densely forested valley between the limestone cliffs of Ault and Mers-les-Bains. The site features a series of Belle Époque villas constructed in the late 19th century tucked into the cliffside woodland. Unlike the larger regional beaches, this location remains isolated from urban development, accessible primarily by a winding road descending through the forest. It served as a coastal retreat for the French aristocracy and high society during the turn of the 20th century. The beach is exposed to strong tidal shifts, significantly altering the available land area based on the water levels. The valley acts as a natural windbreak, creating a unique microclimate distinct from the exposed surrounding cliffs. Coastal erosion monitoring is a constant factor in the maintenance of the nearby clifftop trails.
From the elevated cliff path looking down through the woodland canopy towards the English Channel.
Wear sturdy footwear as the beach consists entirely of pebbles, which can be difficult to walk on in sandals.
Check local tide tables before visiting, as the beach can almost completely disappear during high tide.
Bring your own refreshments, as there are no shops or cafes directly on the beach itself.
Attempting to climb the unstable chalk cliffs surrounding the beach due to the high risk of rockfalls.
Respect the 'Leave No Trace' policy as the site is a protected natural area; keep to marked trails.
