After a bit of slide movement restores the shape of the slope toe, movement stops until enough material is eroded again. The unusually steep eroded toe of the slide, which is in deep shadow in this hillshade image, also contrasts with the even the steepest streambanks in areas unaffected by sliding. This arrangement of slide features with respect to the shape of the slope indicates that the slide is thick and is moving on a weak layer or layers deep beneath the surface of the slope.