Every year some of the most exciting racing of the Tour de France is fought out on the slopes of the mountainous roads of the Alps.

The race may be over for this year, but the vibrant green hillsides of resorts such as Tignes and Courchevel, best known for their winter skiing, are increasingly becoming a magnet for sporty summer adrenaline junkies too.

Activities from downhill mountain biking to vertigo-inducing via ferrata climbing and acrobatic waterslides are sure to get the heart pumping just as much as their winter counterparts.