The memories of the Porvorim landslide last year have come back haunting as the mud from one of the benches has come down crashing posing a threat to the motorists. The landslide site on Mandovi bridge approach road at Porvorim was posing grave danger to the traffic even as possibility of a bigger landslide looms large. Sensing danger, the Public Works Department decided to construct a retaining wall 290 metres in length and three metres in height to prevent any further damage.