Lakes around Erquy are defined by the distinctive Lacs Bleus, former pink sandstone quarries that have filled with water, creating a unique landscape on Cap d'Erquy. This area is known for its geological history, featuring pink sandstone formations and offering elevated views of Erquy Bay. The region also encompasses diverse coastal lagoons and marshlands, providing varied natural environments. These features make Erquy a notable destination for exploring unique aquatic landscapes and historical sites.
Last updated: October 10, 2026
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Not ideal for cycling when it's too heavy to carry
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Here, the cliffs have changed dramatically. For over a century, pink sandstone was extracted here to pave the streets of major cities. Today, the old quarries have given way to these blue lakes.
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The Plurien lagoon, also called the Salines marsh, is a superb hiking spot. At high tide, you can observe lush vegetation composed of obione, samphire and sea lavender with pink flowers. At low tide, gulls, egrets and curlews come to feed and rest. A true natural paradise that will delight lovers of observing animal and plant species.
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The Sables-d’Or-les-Pins lagoon is considered by many to be the most beautiful in Brittany. This vast dune complex shaped by the elements is bathed in a true monochrome of colors. Swimming or contemplation, you will be delighted whatever happens.
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Excellent off-road cycle route along the estuary, with a promenade, observatories, and a bridge crossing the small stream reserved for walkers and cyclists.
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The larger of two lakes formed from a disused quarry.
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The most distinctive lakes in Erquy are the Blue Lakes (Lacs Bleus), which include the Great Blue Lake. These are unique as they are former pink sandstone quarries that have filled with water, creating a picturesque landscape atop Cap d'Erquy.
The Blue Lakes are a testament to Erquy's industrial past. They were once active quarries where pink sandstone, known for its durability, was extracted from the late 18th century until World War I. This sandstone was used for paving streets in major French cities, including Paris. The 'sentier des carriers' (quarrymen's path) still runs alongside the lakes, telling the story of these workers.
Yes, the Blue Lakes are a popular spot for hikers. Easy trails suitable for families can be found, often incorporating sections of the GR 34 coastal path. A well-known loop from Erquy encompasses both the Grand Lac Bleu and Petit Lac Bleu. For more hiking options, explore the hiking guide for Erquy, which includes routes like 'Cap d'Erquy and its wild beaches'.
Yes, the trails around the Blue Lakes are generally easy and suitable for families. Additionally, the View of the Plurien lagoon and the Lagune de Plurien are noted as family-friendly spots, offering opportunities to observe nature.
Yes, many trails around the lakes and lagoons in Erquy are dog-friendly. For instance, the area around the View of the Plurien lagoon is noted as dog-friendly, making it a great option for walks with your pet.
Around the Blue Lakes, you'll see unique geological formations of pink sandstone, which gets its distinctive color from iron oxide. The elevated position offers panoramic views of Erquy Bay, the port, and the lighthouse. Nearby, the Lagune de Plurien is a marsh with lush vegetation like obione, samphire, and sea lavender, attracting various bird species.
From the Blue Lakes themselves, perched 40 meters above the sea on Cap d'Erquy, you can enjoy breathtaking panoramic views of Erquy Bay. Another excellent spot is the View of the Plurien lagoon, which offers scenic vistas of the marshland and its diverse ecosystem.
The lakes and surrounding natural areas in Erquy are beautiful year-round. Spring and autumn offer pleasant temperatures for hiking and fewer crowds. Summer is ideal for combining lake visits with beach activities, while winter can provide a peaceful, dramatic landscape, especially with the unique reflections on the Blue Lakes.
Yes, there are several cycling opportunities. You can find traffic-free bike rides around Erquy that may pass near these natural areas. For detailed routes, refer to the traffic-free bike rides guide for Erquy, which includes routes like 'Côtière Footbridge – View of the Plurien lagoon loop'.
Yes, beyond the Blue Lakes, the Lagune de Plurien (also known as the Salines marsh) is a superb hiking spot known for its rich biodiversity. Further afield, the Lagoon of Sables-d’Or-les-Pins is also highly regarded for its vast dune complex and scenic beauty.
The Lagune de Plurien is a true natural paradise for wildlife observation. At low tide, you can often spot gulls, egrets, and curlews feeding and resting. The lush vegetation also supports various insect and plant species, making it a vibrant ecosystem.
The Blue Lakes are former quarries and are primarily enjoyed for their scenic beauty, historical significance, and surrounding hiking trails. While picturesque, they are not designated swimming areas.


Still not found your perfect lake around Erquy? Check out the guides of these regions to see even more beautiful places.