Planpraz to Lac Cornu, Chamonix - Le Brévent
A half-day hike up to a high altitude mountain lake that is rewarding and challenging
The lift system saves you time and effort, meaning that you can spend more of your day enjoying the tranquility and beauty of this remote spot.
Starting from Planpraz at Brévent, turn left out of the lift station and follow the wide path past the Altitude 2000 restaurant (closed in summer). On a good calm day you’ll see parapenters taking off from the grassy field on your left.
Continue up towards the chairlift pylons and bear right towards Flégère; after a couple of hundred metres you’ll come to a footpath on your left that climbs uphill through open fields before reaching a scree slope. Scramble across the scree (it’s not too steep or challenging) and pass through a narrow gap.
The trail becomes steeper as it approaches Col Cornu and you pass between the impressive peaks of Aiguille de Charlanon on your left and Aiguille Pourrie on your right; once you’ve reached the summit of the col at 2,414m the trail drops down to the lake.
The lake itself is surrounded by rocks that make good picnic tables and the occasional grassy patch. The rocks make for quite eerie acoustics and you can often hear the cawing of birds or bleating of goats, magnified and distorted from their usual sounds. The views are spectacular and you get a completely different perspective by being on the other side of the mountain.
You can either return via the same route, or make a circuit of it by descending to Flégère and taking the cable car down to Les Praz, from where you can catch the bus back to Chamonix or walk alongside the river.
What to bring
This hike is very exposed with no shade or shelter so check the weather and be prepared with suncream, sunglasses, hat, spare layers of clothing, etc. High altitude can bring on dehydration so make sure you have plenty to drink.
The ground is rocky (and sometimes snowy) underfoot, so wear decent hiking shoes and consider using poles.
A map is not essential as the route is signposted but it is always useful to have one for reference - the map that covers this area is IGN 3630OT.
What to see
It's common to see alpine wildlife in this area such as chamois and bouquetin. Marmots live amongst the rocks, so keep an eye out for them once you get higher up.
Sights in Chamonix
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Le Brévent, Chamonix - Town
Located 1.1 km away
Brévent is the closest summer lift to the centre of Chamonix and its impressive rocky summit rises to 2,525m above sea level.
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Espace Tairraz Crystal Museum
Located 1.4 km away
Discover the minerals from the Mont Blanc Valley, famous throughout the world, and learn more about the art of mountaineering.
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Maison de la Memoire et du Patrimoine, Chamonix- Centre
Located 1.6 km away
This museum houses exhibits of Chamonix's past.
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Municipal library
Located 1.8 km away
The main central library for Chamonix which houses the occasional exhibition and lectures.
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Mer de Glace and Montenvers cog railway
Located 2.1 km away
No trip to Chamonix should be complete without a visit to the legendary Mer de Glace, the longest and arguably the most impressive glacier in the Chamonix valley. It is also the largest glacier in France.
Where to lunch
The Bergerie at Planpraz serves lunches, snacks and drinks throughout the summer; they have a lovely sunny terrace with great views. Lac Cornu is a great place for a picnic if you prefer to bring your own food.
Restaurants in Chamonix
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Restaurant Refuge de la Flégère (winter only)
Located in Chamonix
A lovely restaurant located in the Chamonix valley, the Refuge de la Flégère is a true haven for culinary delights in the heart of the mountains.
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La Fruitière Restaurant
Located in Chamonix
This elegant restaurant is situated in La Folie Douce Hotel.
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Bighorn Bistro Restaurant
Located in Chamonix
Bighorn Bistro opened its doors in 2015 with hopes of becoming a staple in the local and tourist communities with their fresh homemade food, artisanal beers and a friendly service. They did just that.
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Stories & Beer
Located in Chamonix
Stories is a local craft beer bar and taco restaurant in Chamonix. Enjoy a slice of Mexico in France.
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Pointe Isabelle Bar and Bistro Restaurant
Located in Chamonix
This tastefully refurbished restaurant and bar are right in the heart of Chamonix on the popular Avenue Michel Croz, close to the train station.
What to do
Things To Do in Chamonix
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Teresa Kaufman Outdoor Photography Classes
Located in Chamonix
'The best photo class you will ever take', is Teresa's bold strapline for her unique photo walk classes, which take place in the incredible outdoors of the Chamonix Valley and offer an opportunity to photograph the major mountains and viewpoints.
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Chamonix Holiday Planning & Travel Scout - Teresa Kaufman
Your holiday time in the Chamonix valley is valuable. Every day counts. Every moment should be a special one.
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Guided off-piste Vallée Blanche
Located in Chamonix
Chamonix Mont Blanc Guides specialise in high mountain guiding, skiing and alpinism. Based in the Chamonix Valley, at the foot of the Mont Blanc range, they have all the experience and expertise to make your dream adventure become a reality.
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Classic Haute Route Trek, from Chamonix
Cloud 9 Adventure is a small independent adventure travel company run by Emma Jack. They offer expert guiding services in and around Chamonix Valley and further afield.
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Tandem Paragliding
Located in Chamonix
This company's sole activity is tandem paragliding, so they are 100 % focused on you and your flight. Their fully qualified pilots have vast experience and have done 1,000s of flight in the Chamonix Valley.
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Mont Blanc training course and ascent - five day
Located in Chamonix
This two to three training course is followed by a three-day ascent and is for people with a high level of fitness. An unforgettable experience, to reach the summit will test the skills you have learnt along the way.
Where to stay
Hotels in Chamonix
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La Folie Douce Hotel
Located in Chamonix
26 July 20257 NightsThis hotel offers stunning alpine views, a vibrant atmosphere, and thoughtful amenities for families. Enjoy spacious rooms, an outdoor heated pool, yoga, spa treatments, and activities for all ages right at the foot of the ski slopes.
Price: €2,964
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Chamois Blanc Apartment Residence
Located in Chamonix
Stay in the heart of Chamonix-Sud at Le Chamois Blanc, a charming residence close to shops, the train station and cable car.
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Lyret Hotel
Located in Chamonix
Hotel Lyret blends Alpine charm with modern creativity, offering a unique stay where art and hospitality come together.
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Le Whymper Hotel
Located in Chamonix
Chalet Whymper blends alpine charm with modern comfort. With space for up to twenty-two guests, shared living areas and thoughtful extras like a sauna, concierge and daily housekeeping, it’s the perfect choice.
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La Chaumiere Mountain Lodge
Located in Chamonix
This mountain lodge enjoys a prime location just metres from the ski bus stop and local train station, with the town centre only a short walk away. Recently refurbished, it now features a smart, modern interior.
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Pointe Isabelle Hotel
Located in Chamonix
26 July 20257 NightsIdeally located, the hotel has 45 spacious, well appointed bedrooms with great views of Mont Blanc and the Aiguilles Rouges mountains.
Price: €1,515
Directions
The Planpraz-Brévent gondola is at the top of Rue des Mollards, the road that goes up the hill behind the tourist office. You can walk there from the centre of Chamonix in under 10 minutes, or you can drive up and leave your car in the paid parking lot.
