Les Trois Vallées is a ski region in the Tarentaise Valley, Savoie département of France, to the south of the town of Moûtiers, partly in the Vanoise National Park.
Since 1973, it has been possible to ski the interlinked valleys using a single ski pass. Thus, Les Trois Vallées is the largest ski area in the world which is connected solely by ski lifts and slopes. It claims to have about 600 km of ski slopes, resulting in 18.5 km² of groomed runs, while an independent expert measured about 493 km. In addition, there are 120 km for cross-country skiing. Les Trois Vallées has 183 ski lifts, which can transport 260,000 skiers per hour. Other equipment owned by the operating companies include 1,920 snow cannons and 76 piste bashers. Employees in the area include 424 ski patrollers and 1,500 ski instructors.
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