Lac Blanc is a small lake in the Vanoise national park. It's a nice destination for a short day hike. And just before you reach the lake, you pass Refuge Lac Blanc, where you can have a drink, lunch. Try the tart au myrtilles, if you're lucky they'll have a piece for you. The views are magnificent, from the refuge and the lake you'll see the white peak of Dent Parrachée (3697m).
This hike starts at Bellecombe (2307m), where you can park your car. In july and august a shuttle bus can take you there as well.
Parc national de la Vanoise is one of the largest (and oldest) national parks in France, very accessible and well worth a visit. The mountains offer nice views and fresh air. The Vanoise is known for its flora and fauna, and if you can't see the Alpine marmots (and you probably will), you'll most certainly hear them. If you're lucky you can even spot an eagle or Alpine ibex.
Farmers still herd cattle and sheep in the national park. On the way to Bellecombe you'll pass a small working farm (called La Femma), where you can stop and taste and buy cheese (also a really nice blue cheese called Bleu de Termignon).
This hike is perfect for a family hike. The lake and the mountain hut are a perfect resting point for children. There's plenty of space for them to play. Let them feel how cold the water is, or have a relaxed lunch in the sun.
The Refuge Lac Blanc opens early june and closes at the end of september. This hike is fairly easy, but high enough to see snow early in autumn and well in to spring.
Bellecombe (2307) parking. In Termignon follow the D1006 to Lanslebourg-Mont-Cenis. Shortly after leaving the village, take the D126 before the road makes a very sharp turn to the right and starts climbing.
The hike to Lac Blanc is easy. The hike starts with a short climb, and because you'll have to walk the same trail back ends with a descend. But nothing serious.
The trail starts at the beginning of the Bellecombe car park, and is well signposted. The trail is wide, and takes you right to the mountain hut and lake.
Just to be sure, don't just take your picknick blanket and lunch. Wear sturdy mountain boots and take some warm clothing and a rain jacket. And don't forget: Slip-Slop-Slap. Take a shirt with long sleeves, put on sunscreen and bring a hat to protect yourself (or others) from sunburn.
Take plenty of water. The mountain hut doesn't have a well. They do sell bottled water.