Whenever a mass of slope material moves as a coherent block , we say that a slide has taken place. There are several types of slides, but one of the most common is a slump. A slump occurs when a portion of hillside moves downslope under the influence of gravity. A slump has a characteristic shape, with a scarp or cliff at the top of the slump, and a bulge of material (often called the toe of the slump) at the base of the slump. In the image shown below, see if you can spot the location of the scarp and toe of the slump.