Snow and ice

9 photos of the Himalaya mountains in Tibet

17 photos of the Khunjerab pass, the border crossing to Pakistan and at 4800m the highest point of the Karakoram highway

10 photos of the Kongur Tagh mountain, at 7649 metres the highest peak of the Kunlun mountain range in China

15 photos of the the Karakoram highway between Tashkurgan and the Khunjerab pass

31 photos of the Zugspitze, Germany's highest mountain

13 photos of Gulmarg, a popular ski resort in India's Jammu and Kashmir Himalayan state

22 photos of the Atlas mountain range in southern and central Morocco between Marrakech and Ouarzazate and near Midelt

30 photos of the Annapurna trail between Manang and the Thorong La pass

28 photos of the Annapurna trail between theThorong La pass and Jomson

29 photos of snow-covered Mt Etna at an altitude between 2000 and 2600m

26 photos of the Causasus mountains in the Svaneti region of Georgia

31 photos of the Mzaar ski resort, the most modern, glitzy and best-equipped ski resort in Lebanon

72 photos of Svartisen, a large glacier in central Norway

8 photos of Taubenstein, a 1692m high mountain southeast of Spitzingsee

24 photos of Firstalm, an area of pastures west of Spitzingsee, where people ski in winter