Telephoto view of Piz Caral (3421m). In the foreground massive thinning of Vadret dal Cambrena is evident: 1972 this part of the glacier ended in an ice cliff from which occasional ice avalanches descended; by 2007 the ice has become thin and flat. Piz Caral's north face was covered by ice aprons in 1972; by 2007 these have almost completely disappeared. In the centre and part of the photo and an the left debris from rockfalls can be seen. This is probably due to the melting of permafrost and destabilization of the rock in den peak's north face. Photos Joachim Wolff.