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In the last few years several advances have been made in the use of radar images to detect map monitor ground deformations. DInSAR (Differential Synthetic Aperture Radar Interferometry) A-DInSAR/PSI (Advanced DInSAR/Persistent Scatterers Interferometry) technologies have been successfully applied in the study of deformation phenomena induced by for example active tectonics volcanic activity ground water exploitation mining landslides both at local regional scales. In this paper the existing European Space Agency (ESA) archives (acquired as part of the FP -DORIS project) which were collected by the ERS- / ENVISAT satellites operating in the microwave C-band were analyzed exploited to understand the dynamics of landslide subsidence phenomena. In particular this paper presents the results obtained as part of the FP -DORIS project to demonstrate that the full exploitation of very long deformation time series (more than years) can play a key role in understanding the dynamics of natural human-induced hazards. [ABSTRACT FROM AUTHOR]