Slides - Occurs on a slide/ slip plane or what is known as a failure surface, which is lubricated by rain water which had infiltrated along this major line of weakness. - Slides may be rotational or translational (planar). - In the planar slide, the weathered rock moves downhill leaving behind it a flat rupture surface. - Where rotational movement occurs, a process sometimes referred to as slumping, a curved rupture surface is produced. These are mostly slides, usually along more than one slip plane, which is curved. These have a variety of names but are essentially the same process. The more resistant/ permeable rock e.g. limestone remains, while the clay material slumps into blocks on slip planes. - Impacts on slopes: Stepped uneven profile, scars, slumped block and a toe of material at the base.