The stability of slopes is important in the design of such excavations as open pits, quarries, and foundations, and in natural slopes forming cliffs, valley sides, and reservoirs, where movement may have serious consequences. Investigations into slope stability include measurements of shape, geologic structures, and soil strengths. Stabilization can be achieved by regrading, grassing, dewatering, meshing, grouting, shotcreting, rock bolting, or combinations of these.