The people of the World Heritage Region have always been confronted with natural hazards. In the high mountains, the surface is formed by a continuous interaction of uplift and ablation. Weathering and erosion under the influence of gravity lead to a constant removal of soil and rock material, and thus equalize the liftings more or less. The ablation, usually enhanced by running water, snow, ice, wind, and here and there also by humans and animals, occurs in many places and for a long time slightly and almost imperceptibly. Occasionally, often under the influence of unfavourable weather conditions, sudden discharges occur in the form of rock falls, landslides, avalanches, debris flows or torrent events. These processes occur frequently in the World Heritage Region.