Best attractions and places to see around Le Lac-D'Issarlès include a unique volcanic crater lake and surrounding natural features. This region, part of the Monts d'Ardèche Regional Nature Park, is characterized by its volcanic past, offering diverse landscapes of ancient volcanoes and basaltic flows. Visitors can explore geological curiosities, historical sites, and engage in various outdoor activities.
Last updated: July 7, 2026
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Etymology: comes from Mas d’Adam, name of the old domain which was located at the site of the current village which was ceded by the lord of Géorant to the bishop of Viviers to allow him to found the abbey of Mazan. It all begins with the foundation of the Cistercian abbey in the heart of the village. This takes place between 1119 and 1122. At the beginning of the 12th century, canons came to settle on the site of Mas d’Adam (toponym that would evolve towards MAZAN), and were joined by monks from the abbey of Bonnevaux. These religious men built an immense abbey, of which only the remains are left today, which experienced a period of apogee that lasted until the Hundred Years' War. It gave birth to four other abbeys which are Bonneval, Sénanque, Sylvanès and le Thoronet as well as establishments of nuns. After this prosperous period, misfortunes followed one another at the abbey of Mazan: it was plundered by the great companies of the Hundred Years' War, then attacked by the Huguenots in the modern period. Before this last pillage, the monks, according to legend, would have melted a golden bell with all their treasures, which they would have buried somewhere, opposite and in front of the bull's eye, within earshot of the cock's crow. https://www.montagnedardeche.com/patrimoine-culturel/village-de-mazan-labbaye-2387/
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A pass at an altitude of over 1500 m. It is the highest in Ardèche.
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Mont Gerbier-de-Jonc is one of the highest peaks of the Monts d'Ardèche in the south-eastern Massif Central. The mountain itself is a striking, extinct volcanic cone with a good view over the Massif Central. The ascent and descent require some fitness and good footwear. There are a few short climbing rocks that cannot be avoided. But the view is worth it.
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Very nicely located grotto, you can also go swimming below.
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A volcano in the shape of a needle of cooled lava, Le Gerbier de Jonc, placed like a cone on the Ardèche plateau, is with the Gouléïou, located in the Cirque des Boutières, the archetype of the phonolitic juices of this territory. From the Gerbier de Jonc and the surrounding phonolite reliefs, rises the longest river in France: the Loire. Trails of varying difficulty and length lead to the summit.
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Stroll around the lake on Sunday July 23, 2023. Very pleasant because it is largely shaded. Provide credit card (no possibility to pay in cash) for paid parking from 01/06 to 30/09, package 3€. Lots of people on the beaches and around.
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Work "A circle and a thousand fragments" by Felice Varini. https://www.ardeche-guide.com/lieux-de-visites/sites-historical-monuments/oeuvre-un-cercle-et-mille-fragments-de-felice-varini-4827079
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Crater lake, 1,000 meters above sea level with a very pleasant beach for swimming. Very calm. Good food options around and public restrooms.
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The region is dominated by its volcanic past. The most prominent feature is Lac d’Issarlès, a deep volcanic crater lake formed by magma escape. You can also explore the ancient volcano Mount Gerbier de Jonc, which is the source of the Loire river and offers panoramic views. The area also features visible basaltic flows, other volcanic peaks like Suc de Cherchemuse, and the wild Loire River with its picturesque waterfalls and basalt cliffs.
Yes, the village itself has an 11th-century Romanesque-Gothic church with a porch and two towers. Near Lac d’Issarlès, you can find renovated troglodyte dwellings, which are caves dug into the rock, offering a glimpse into the region's past. Further afield, Mazan-l'Abbaye features the ruins of a 12th-century abbey with a unique art installation.
The clear waters of Lac d’Issarlès are perfect for various water sports. You can enjoy supervised swimming during July and August, paddle boating, canoeing, windsurfing, and stand-up paddleboarding. Equipment rental is available on-site.
Absolutely. Numerous marked trails cater to all levels. A pleasant footpath circles Lac d’Issarlès, taking about an hour to complete. More challenging routes lead to the summit of Suc de Cherchemuse or explore the wider Montagne d'Ardèche, offering diverse landscapes. For more options, check out the dedicated hiking guide: Hiking around Le Lac-D'Issarlès.
Yes, Lac d’Issarlès is a popular spot for fishing. It's teeming with brown and rainbow trout, Arctic char, salmon, minnows, gudgeon, and whitefish. Remember that a departmental fishing license is required, and certain baits are prohibited.
For stunning panoramic views, climb Mount Gerbier de Jonc. The Boutières Cross Pass also offers spectacular viewing spots. Additionally, the Col du Gage belvedere, located southeast of the village, provides a comprehensive view of the entire Lac d’Issarlès.
Yes, Lac d’Issarlès is considered family-friendly, with supervised swimming in summer and a pleasant footpath around the lake. The climb up Mount Gerbier de Jonc is also recommended with children, as it involves a fun, narrow path with some climbing sections that are very safe.
Visitors particularly enjoy the unique volcanic landscapes and the opportunity to climb peaks like Mount Gerbier de Jonc for its mighty views. The tranquility and beauty of Lac d’Issarlès, especially for swimming and walking, are also highly appreciated. Many find the combination of natural beauty and accessible activities very rewarding.
Yes, the region offers numerous marked trails suitable for mountain biking. There are also several cycling routes available, including challenging loops around Mount Gerbier de Jonc and Lac d’Issarlès. You can find more details in the cycling guide: Cycling around Le Lac-D'Issarlès.
The summer months (July and August) are ideal for water activities at Lac d’Issarlès, with supervised swimming available. Spring and autumn offer pleasant temperatures for hiking and exploring the volcanic landscapes, with fewer crowds. Even in good weather during weekends or holidays, popular spots like Mount Gerbier de Jonc can be busy, but the climb is always worthwhile.
Le Lac-D'Issarlès is part of the Monts d'Ardèche Regional Nature Park, known for its volcanic heritage. You can explore the maar crater of Lac d’Issarlès, visible basaltic flows, and strombolian volcanoes. An 'Explorer Pass' is available for those interested in discovering seven young volcanoes of Ardèche, including Lac d’Issarlès, by collecting punches at each site to earn a badge.


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