Terrestrial laser scanner has been used to detect rock falls greater than 0.01 m³ which have occurred during some years on a thin-bedded limestone cliff of the Subalpine Ranges, French Alps. Spatial- temporal rock fall frequencies have been determined and the volume-frequency relation has been fitted with a power law. The influence of the geological and morphodynamic context on the power law parameters has been studied. These parameters can be used for quantitative assessment of diffuse hazard in rock walls having similar geological and morphodynamic contexts. The geometrical configurations prior to rock fall have also been studied in order to better identify the future rock fall locations. Prone to fall configurations depend on the rock mass internal structure and the wall surface geometry.