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The glacier Basei viewed from the north, almost completely devoid of snow We live in a hot natural phase, but in particular the human activities have helped to increase this phenomenon. The rate of melting of glaciers has tripled since 1970. In 2030, the glaciers could be just a memory THE LAKE BORN BETWEEN THE CLOUDS Ghiaccio del Rocciamelone First phase of development in the 1980 The situation in September 2000 Measurement of the depth of the lake using a sonar The glacial erosion Strong pressure exercised by the glacier moving and by the friction enhanced by the presence of debris. U valleys Ample funds and often stepped, flanked by steep scarps The lower Susa’s valley Moraine accumulation Jumble of boulder scattered in a matrix of sand and silt Lateral moraine The lateral moraine that blocks the pond indicates the greater level reached by the glacier Glacier of the Mare (Ortles-Cevedale) The amphitheatre of the Lake of Miage (Monte Bianco) is composed of twenty concentric moraines (pile of rock debris) Glacial strip (Valley of Funes – Alto Adige) Sheepbacks (or back of whale) Striped rocks The sheepbacks are generally rounded on the top and in the side, oriented according to the direction of glacier The big rocks Erratic rocks The erratic rocks can be transported over long distances by glaciers Caselette The big rock in the entrance of the village Pianezza Il “Roc” Villarbasse Condove The rock of Castellazzo The block rocky region Castellazzo is a typical example of a boulder, fell for landslide on the surface of a glacier and transported in the valley THE VALLEYS SUSPENDED The longitudinal profile of a glacial valley threshold navel Germanasca’s Valley – Torino – I tredici laghi Rock glaciers characteristic accumulations of large blocks with their lobed shape