Highlight • Lake
Lac de Plan Vianney
Hiking
5.0
(7)
Lac de Plan Vianney is a pristine high-altitude glacial lake nestled within the stunning Oisans region of Isère, France. Situated at an elevation of approximately 2,250 meters (7,380 feet) within the protected Écrins National Park, this natural monument offers a truly wild alpine experience. Its deep blue waters are held by a natural glacial lock, reflecting the rugged peaks of the surrounding landscape.
What draws hikers to Lac de Plan Vianney is the promise of spectacular rewards after a demanding journey. The panoramic views from its shores are exceptional, encompassing distant giants like Mont Blanc, the Grandes Rousses massif, Pied Moutet, and the distinctive Aiguilles d'Arves. Many visitors appreciate the profound tranquility and secluded atmosphere, offering a peaceful escape compared to more frequented alpine destinations.
Before setting out, be prepared for a challenging hike to Lac de Plan Vianney lake, often involving steep and sometimes exposed paths. Starting from La Danchère, a small hamlet near Vénosc, the trail demands appropriate footwear and clothing suitable for alpine conditions, as weather can change rapidly at this elevation. While less crowded than its neighbor Lac du Lauvitel, planning your visit ensures a more serene experience.
The best time to hike Lac de Plan Vianney is typically during the warmer months, from late spring to early autumn, as the lake is covered by ice for a significant part of the year. This period offers the most favorable conditions for hiking and allows for spotting local wildlife such as ibex and marmots. The clear, cold waters, indicative of an extremely low trophic level, support a sensitive population of brook trout, though fishing is generally prohibited.
The journey itself is an adventure, with trails that wind through diverse terrain, including outcrops of vaugnerites – dark, mica-rich rocks. Hikers often describe the continuous breathtaking views as they climb higher, especially from nearby vantage points like the Brèche du Périer, which offers expansive panoramas over the Valbonnais and Oisans regions. The pristine nature of the lake, with its clear waters and lack of significant aquatic vegetation, truly highlights the untouched beauty of the Écrins National Park.
Whether you're seeking a demanding hike with unparalleled views or a tranquil immersion in alpine nature, Lac de Plan Vianney delivers. Explore a variety of hiking trails to Lac de Plan Vianney and discover routes that suit your pace and experience level. With komoot, you can easily plan your visit and find detailed information on the best hikes near Lac de Plan Vianney lake, ensuring you make the most of this hidden gem in the French Alps.
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Nearby routes
Best routes near Lac de Plan Vianney
4.8
(6)
83
hikers
13.7km
07:40
1,300m
1,300m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.
Details
Informations
Elevation 2,310 m
Weather
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Wednesday 27 May
28°C
12°C
35 %
Additional weather tips
Max wind speed: 7.0 km/h
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Frequently Asked Questions
What is the typical length and duration of the hike to Lac de Plan Vianney?
The most common hike to Lac de Plan Vianney starts from La Danchère. It's a challenging round trip, often covering 10-12 kilometers (6-7.5 miles) with a significant elevation gain. Hikers should generally allow 5-7 hours for the full excursion, depending on pace and stops for photos.
How difficult is the trail to Lac de Plan Vianney?
The trail to Lac de Plan Vianney is rated as difficult. It involves steep ascents, rocky terrain, and sometimes exposed sections. Hikers should have a good level of fitness, experience in alpine environments, and appropriate gear. It is not recommended for beginners or those unaccustomed to strenuous mountain hikes.
Are there any public transport options to reach La Danchère, the starting point for the hike?
Public transport options directly to La Danchère can be limited, especially outside peak season. It's often necessary to reach a larger town like Bourg d'Oisans or Vénosc first, and then arrange for a local shuttle, taxi, or carpool. Checking local bus schedules for the Oisans region is advisable before your trip.
What are the regulations for hiking and camping within Écrins National Park?
Écrins National Park has strict regulations to protect its natural environment. Wild camping is generally prohibited, though bivouacking (setting up a lightweight tent for one night, from 7 PM to 9 AM) is permitted near certain refuges or at least an hour's walk from road access. Dogs are typically not allowed off-leash and are restricted in certain zones. Always check the official Écrins National Park website for the most current rules regarding permits, camping, and pet policies before your visit.
Is Lac de Plan Vianney suitable for a winter hike or other winter activities?
Lac de Plan Vianney is covered by ice for approximately seven months a year. Winter access is extremely challenging and should only be attempted by experienced mountaineers with appropriate equipment (snowshoes, crampons, ice axe) and knowledge of avalanche safety. It is generally not recommended for casual winter hiking due to harsh conditions and potential hazards.
Is the trail to Lac de Plan Vianney family-friendly or suitable for children?
Due to its difficult rating, steep ascents, and challenging terrain, the hike to Lac de Plan Vianney is generally not considered family-friendly for young children or those without significant hiking experience. There are no easy, flat sections suitable for strollers. Families with older, experienced children who are accustomed to strenuous mountain hikes might find it rewarding, but caution is advised.
Are dogs allowed on the trails to Lac de Plan Vianney?
As Lac de Plan Vianney is located within Écrins National Park, specific regulations apply to dogs. Generally, dogs are not permitted off-leash and may be restricted or prohibited in certain core zones of the park, even on a leash. It's crucial to consult the official Écrins National Park guidelines regarding pet access before planning your hike with a dog.
Where can I find accommodation near La Danchère or Vénosc?
La Danchère itself is a small hamlet with limited accommodation options, possibly a gîte or a few private rentals. Vénosc, a nearby village, offers more choices, including hotels, gîtes, and holiday apartments. For a wider range of services and accommodation, the larger town of Bourg d'Oisans is a good option, though it's a bit further away. Booking in advance, especially during peak season, is highly recommended.
Is there parking available at the trailhead for Lac de Plan Vianney?
Hikers typically start from La Danchère. There is usually a small parking area available in or near the hamlet. However, parking can fill up quickly, especially during peak summer months and on weekends. Arriving early in the morning is strongly advised to secure a spot and avoid congestion.
What are the unique geological features of Lac de Plan Vianney?
Lac de Plan Vianney is a classic example of a glacial overdeepening, formed by the erosive power of ancient glaciers in crystalline gneiss bedrock. A natural rocky 'verrou' (glacial lock) acts as a dam. Along the trails, hikers can observe outcrops of vaugnerites, dark rocks rich in mica flakes, adding to the geological interest of the area.
Are there any cafes or restaurants directly at Lac de Plan Vianney or in La Danchère?
There are no cafes or restaurants directly at Lac de Plan Vianney; it's a pristine alpine environment. La Danchère is a very small hamlet, and while it might have a small gîte that offers meals to guests, dedicated public cafes or restaurants are scarce. It's best to bring all necessary food and drinks for your hike. More options can be found in the nearby village of Vénosc or the larger town of Bourg d'Oisans.
Can you swim in Lac de Plan Vianney?
While there are no official prohibitions against swimming, Lac de Plan Vianney is an extremely cold, high-altitude glacial lake. Its waters are very clear and have a low trophic level, supporting sensitive aquatic life like brook trout. The water temperature is consistently very low, making swimming a challenging and often brief experience, even in summer. Most visitors prefer to admire its beauty from the shore.