Spending your summer holidays in the Alps will make you feel like switching off.The sound of distant cowbells. The trills of an Alpine chough overhead. A whistling marmot scurrying for cover. A burbling river. Hiking in the Alps allows you to fully escape the crowds and experience such calm that your sense of hearing seems to be heightened tenfold. Just you and the sounds of nature – and air so fresh you'll wish you could bottle it up and take it home.