The article describes the investigation of a landslide incident in Epirus (NW Greece), on the national road connecting Preveza and Igoumenitsa. The main geomaterials involved are cyan marl to very stiff clay, green gravely clay and the clayey embankment material. The landslide destroyed part of the road embankment covering the natural slope above the Despo stream. The failure evolved in two phases, the first occurring in the winter of 2004, 30 years after the embankment construction, most possibly due to significant fill loading at its toe and heavy rainfalls. After its reconstruction, accompanied by mild rehabilitation works, a landslide reactivation took place in winter of 2005-06. The resulting scarp, ~30m in width and ~10m in height, developed within the embankment. Moreover, indications of minor destabilisation were observed on the so far stable part of the embankment, suggesting a potential extension of the landslide eastwards. The information collected during numerous site visits, the evaluation of a full-scale geotechnical survey (boreholes, laboratory testing and instrumentation including piezometers, inclinometers, crackmeters and optical targets) and the back analyses performed, led to the understanding of the failure mechanism. Possible solutions were then investigated, concerning both the main landslide area and its possible extension. The rehabilitation approaches varied from purely geotechnical e.g. slid mass removal and construction of a new reinforced embankment, to mainly structural, such as bridge construction to totally replace the embankment.