The documentary is a disturbing survey on the state of health of the Alps. Last summer, the rise in temperature due to the greenhouse effect was confirmed once again. A phenomenon that began in the eighties and is now showing its first tangible signs. The most obvious result of this climatic change is the withdrawal of the alpine glaciers, which every year free new unstable terrains that easily turn into landslides and steep slopes. Moreover, the rise in temperature pushes the rainfall limit upwards: where it used to snow, dangerous thunderstorms now rage. For some years the glaciologists have discovered a new risk for the hydrogeological stability of the mountains: permafrost. This perennial ice, commonly associated with the Arctic lands, but also present in the Alps, is melting and making many slopes unstable.