Switzerland

   At 23km this is the longest glacier in Europe and the most beautiful in Switzerland, starting south of the Jungfrau in the Bernese Oberland and descending to the Upper Rhone valley in the Valais. On the horizon at the start of the glacier is the observatory of the Jungfraujoch. This photograph was taken in June 2008 and the glacier, which is a UNESCO World Heritage Site, is said to have retreated by 100m between 2005 and 2006.