Natural slopes, with changes of grade or planned changes in the overall grade may lead to more interesting and pleasing landscapes. Straight lines or lines lending themselves to square, rectangular, or circular areas tend to develop into a formal landscape. Curved, sweeping lines are less formal and more relaxed. Home landscaping often attempts to develop an informal appearance. A rock wall can increase the beauty of the site as well as add to the area's utility.
Uneven terrain can add visual interest and variety in the landscape if handled properly.
Changes in grade may be used to delineate utility, recreational and gardening areas, as well as to provide proper surface drainage. Color and shape of rock used should be carefully incorporated to unify a design with the overall landscape. There are several things you should consider in constructing rock walls to reduce grade or slope. The wall will usually be more stable if developed into a gentle curve. In informal landscaping, curved lines tend to be more pleasing to the eye than straight lines, while straight walls may need to be bolstered with columns or jogs to improve stability.