Landform

Landform, or terrain, is the basis of any landscape, forming the (roughly) horizontal foundation upon which all else is arrayed. Landform is made up of various underlying geological substrates, with diverse surface coverings: exposed rocks, sand, gravel, synthetic paving, grass, leaf litter, and so on. Usually we don't see the constituent material directly, but rather the covering -- often vegetation -- that forms the surface. The underlying material, however, gives characteristic shape and texture to landform, influencing the way natural forms occur, and how built structures and surfaces will appear and behave ... more...