For the most part, the slope is devoid of obvious scarps, flanks, or landslide toes. Rather, the hillslope has a very gentle undulatory surface superimposed on a series of irregularly spaced topographic benches. Slopes that have not failed within historical time may lack the welldefined scarps and flanks that are commonly observed in landslide deposits. More recent slope failures show all the classic features of landslides and, even though they quickly reestablish a vegetative cover, they remain recognizable topographic forms. Our experience with excavations and landslides throughout the metropolitan area is that virtually all these colluvial slopes have failed at some time in the past, and a trench anywhere through the colluvium would reveal a continuous failure surface near the colluvium-bedrock contact.