Glacier ski resorts have played a major role of importance during the winter seasons over the last decade. It was demonstrated, during the three consecutive snow-deficient winter s between 1987 and 1990, that only those resorts with glaciers could provide both an early start to the ski season in winter and reliable snow conditions throughout the winter season. The future of glacier skiing in Switzerland, both winter and summer, largely rests with the consequential outcomes of the predicted climate change due to global warming. Because of ongoing glacier retreatment it is expected that substantial reductions in the usage of summer ski resorts will occur. As a consequence of the predicted rising snowline in winter, the demand for ski tourism will concentrate on the high mountain ranges. Simultaneously ski resorts at low altitudes will lose their ski tourism and therewith their economic base. In the glacier ski resorts increases in the number of transported passengers are to be expected.