ERS InSAR has been used for mapping and assessing slope movements in an alpine periglacial test region. A large number of areas have thus been recognized as affected by mass wasting related to permafrost or not. Glaciers and most of the active geomorphic landforms display in fact typical ERS InSAR signals. A typology has been established. It can be seen as a useful tool to interpret ERS InSAR data in such a mountain environment.