Best mountain peaks around La Buisse are found in a region geographically defined by its proximity to the Montagne de Ratz and the alluvial plain of Moirans. This area provides access to the larger Chartreuse, Belledonne, and Vercors massifs. The Montagne de Ratz itself is a limestone plateau, forming the southern extremity of the Jura massif, with its highest point at Roche Brune (942 meters). The surrounding massifs offer diverse opportunities for mountain enthusiasts, featuring geological interest, hiking trails, and…
Last updated: July 12, 2026
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Very beautiful summit with a 360 degree panorama.
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Easy and very pretty, a 360° as we like them in Chartreuse
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The Grande Sure is one of the highest peaks in the Chartreuse. Culminating at 1,920 meters above sea level, it dominates the west of the massif, offering superb panoramas.
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La Pinéa is a pretty rocky summit which is located in the middle of the Chartreuse at 1,771 meters above sea level. It offers numerous views of the highest mountains of the massif.
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La Sure culminates at an altitude of 1,643 meters between the peaks of La Buffe and the Sornin plateau. Its panorama offers views of Grenoble, the Chartreuse massif and the Mont-Blanc massif.
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Culminating at 1,867 meters, the Charmant Som is an emblematic summit of the Chartreuse massif. From the inn of the same name, accessible by car, the ascent is made without major difficulty. At the top, the panorama is spectacular!
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The region around La Buisse offers several popular peaks. Charmant Som summit, at 1,867 meters in the Chartreuse massif, is known for its accessibility and spectacular panorama. Another favorite is La Grande Sure, which rises to 1,920 meters and provides extensive views over the Isère valley. For views of Mont Blanc on clear days, La Buffe Summit in the Vercors massif is highly regarded.
Yes, for a family-friendly experience, the View of the Vercors massif along the Isère River offers a beautiful cycle path with picnic spots and shade, making it pleasant for all ages. While not a peak, the Plateau du Grand-Ratz also provides accessible hiking trails suitable for families, with some routes being easier than others.
The mountains around La Buisse are rich in natural features. You'll find diverse geological formations, particularly on the Montagne de Ratz, which is a limestone plateau with a distinct 'box-fold' structure and calcareous layers from the Jurassic and Cretaceous periods. The area also boasts panoramic viewpoints, alpine pastures, and dense forests, especially around the Col de la Charmette.
For breathtaking panoramas, consider visiting Charmant Som summit, which offers spectacular views of the Chartreuse massif. La Grande Sure provides extensive vistas, including the Isère valley. Additionally, the viewpoint from Roche Brune on the Plateau du Grand-Ratz offers expansive views over the Pays Voironnais, Chartreuse, and Vercors massifs. The Col d'Hurtières also provides multiple panoramas of the Chartreuse, Belledonne, and Vercors.
Yes, the Montagne de Ratz is a significant geological feature, showcasing a unique 'box-fold' structure and ancient calcareous layers. It also features a large quarry exposing rock formations. Beyond geology, the area around the Plateau du Grand-Ratz is known for ancient writings and enigmas carved in stone, adding a historical and mysterious element to adventurous explorations, including caving.
Beyond hiking, the region offers excellent opportunities for cycling and mountain biking. The Col d'Hurtières is a popular trail for mountain biking. For more cycling options, you can explore routes in the Cycling around La Buisse guide. Mountain biking enthusiasts can find trails in the MTB Trails around La Buisse guide, including challenging routes like the Placette Pass loop. Running is also popular, with trails like the Roche Brune Viewpoint loop detailed in the Running Trails around La Buisse guide.
For those seeking a challenge, the ascent to La Grande Sure in the Chartreuse massif is a demanding climb. The northern approach to the Col de la Charmette, while accessible, can be a challenging cycling ascent with sections exceeding a 10% gradient. Adventurous exploration on the Montagne de Ratz can also involve technical hiking, roped passages, and caving.
The highest point on the Montagne de Ratz plateau, which borders La Buisse, is Roche Brune, reaching an altitude of 942 meters. It offers accessible trails and panoramic views.
Visitors frequently praise the spectacular panoramas, especially from peaks like Charmant Som summit and La Grande Sure. The abundance of wildflowers, unique geological formations, and the sense of tranquility found in areas like the Col de la Charmette are also highly appreciated. Many enjoy the diverse range of activities, from accessible family walks to challenging ascents and cycling routes.
Yes, on clear days, you can observe Mont Blanc from certain peaks. La Buffe Summit, the northernmost peak of the western Vercors ridge, is known for offering views of Mont Blanc. Similarly, La Sure also provides views of the Mont-Blanc massif.
The Col d'Hurtières, at 1,752 meters, is a popular destination for both mountain biking and hiking, offering extensive views. The Col de la Charmette, hidden in the Chartreuse massif at 1,261 meters, serves as an excellent starting point for numerous hiking trails and provides a challenging cycling ascent from the north.


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