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Investigation of landslide hazard and risk has been a major research focus for the international community over the last decade. During this period, efforts were directed towards two scales of investigation: site-specific analysis and regional assessment. Site-specific analysis may involve a wide spectrum of slope instability and all types of landslide activity covering areas ranging from just a few square metres to whole mountainsides. The objectives for this scale of investigation generally include a range of activities, involving: mapping the geometry and extent of the failure, mapping the environmental setting, determining the degree of activity by either surface measurements or subsurface observations, collecting soil or rock samples, analysing geophysical and geotechnical properties, assessing slope hydrology and porewater pressures, constructing geomorphic and geotechnical models of the site, and performing …