Explore Clairmarais through its landscapes, wildlife and history. The waters of the Étangs du Romelaëre National Nature Reserve were once peat bogs: their exploitation, mainly in the 19th century, led to the formation of the various bodies of water. This origin gives the landscape a tangible historical dimension. When planning your trip, you can choose from different areas of interest—from trails and wildlife to abbey history and activities related to the marshland.
Water, woodland and wildlife
The Forêt de Rihoult-Clairmarais is also a defining part of the area’s natural landscape. It covers 1,200 hectares of damp oak forest. Grey herons, wild boar and roe deer can be found there. The stated period for grey herons is from March to June; sightings are not guaranteed. If birds are a particular interest, this seasonal reference can help you choose when to travel, without promising a sighting.
The Étang d'Harchelles, created by monks, is also in the Forêt de Rihoult-Clairmarais. The pond links the woodland landscape with its history: a specific place is connected to a historical origin. Details like these offer a richer view of nature than a simple description of landscape features.
Compare trails by length and focus
The Sentier du Blongios is 2.8 kilometres long, open from 15 March to 15 December, and accessible to people with reduced mobility. Since access is seasonal, check that it is open before your trip. The Sentier du Cormoran is 4 kilometres long and leads to an ornithological observation point; access conditions may change, so check them before visiting.
The lengths of 2.8 and 4 kilometres can be compared directly. Beyond that, the trails differ in their stated focus: for the Sentier du Blongios, opening dates and accessibility for people with reduced mobility are important planning details. The Sentier du Cormoran’s description highlights its ornithological observation point.
Activities in the marshland
Parcours Aventure is an orienteering activity by rowing boat in the Audomarois marshland of Clairmarais. It differs from the trails described above in how you get around: here, the rowing boat takes centre stage. Another way to explore the marshland is Trott’in Clairmarais, which offers discovery tours on all-terrain electric scooters through the marshland and the outskirts of Saint-Omer. Several formats are available from age 12. As this is a seasonal activity and dates and age requirements may change, check the details for your chosen format when planning.
La Grange Nature is located in the heart of the Audomarois marshland and is run by Eden 62. Open year-round, it offers exhibitions, activities and conferences about the landscapes, fauna and flora of the natural areas in the Pas-de-Calais département. Individual programmes may change. The activities complement exploring the landscape with a themed introduction to nature and regional habitats.
Abbey and cultural heritage
The former Cistercian Abbey of Clairmarais is a protected historic monument. The two protection dates are 2 December 1946 and 3 July 1987. The protected complex includes partially medieval remains of the abbey entrance: the gatehouse and former guest buildings, including the chapel. These features give the protected site a clearly defined architectural history that goes beyond the label “abbey.”
Another cultural and spiritual landmark is the Grotte de Clairmarais, regarded as an important pilgrimage site. Visitors interested in religious heritage will find another subject alongside the former abbey, shedding light on the history of the area from a different perspective.
A visit shaped around your interests
When planning your trip, you can give different emphasis to wildlife, trails, cultural heritage and activities in the marshland. The practical considerations vary: for the trails, these include length, seasonal opening dates, accessibility or the observation point; nature and culture bring wildlife, woodland history and protected buildings into focus.
The Brasserie Abbaye de Clairmarais is another local attraction: it makes craft beer at the Ferme de l’Abbaye. Tours and tastings are available by reservation; opening hours and booking conditions may change. A reservation is therefore part of planning this activity.
Discover more destinations: Caumont, Éperlecques, Blendecques, Montcavrel, Baincthun, Acquin-Westbécourt, Torcy, Houlle
For the broader travel overview: Pas-De-Calais.
