Wisps of clouds glide past the windows. Ice, snow and clouds melt together to form a uniform scene of white and crystal. Black rocks are the last point of focus and orientation. A small blue gap opens up in the clouds. Not two minutes later, the entire sky is perfectly blue. This can only be experienced at altitudes of 3,100 metres above sea level. Normally, this is an altitude where you find researchers, mountain climbers and pilots. At the 3100 Kulmhotel Gornergrat, you check in comfortably at this altitude.