he's determined to see the titlis glacier remain a tourist draw. with the help of a high-tech cooling system in a side shaft of the glacier cave, the temperature will be kept at a chilly minus seven degrees celsius. >> this will keep the temperature in the cave steady and prevents the glacier from melting or at least slows the process down. >> this reporter wants to know why not let nature simply take its course? >> the glacier cave is very important in terms of tourism. about one million visitors a year come to mount titlis and many of them come mainly to see the glacier. they want to feel it, enter it, touch it. so, we really need to preserve the glacier cave. >> but that's not the only measure. artificial snow is also on the cards. >> that will be happening at a later stage. if we can produce artificial snow at night so that the glacier is white when the sun comes up, then the sunlight will be reflected and the melting process prevented. >> a cooling system inside the glacier and artificial snow on top of it. and in between, a 1000 square meter