|landform = dune_system|
|hills or ridges of loose sand piled up by the wind|
|Used on these elements|
|Tools for this tag|
The tag landform=dune_system is used to map a dune system, an area of sand dunes : a landform of hills or ridges of loose sand piled up by the wind. Also sometimes called dune field or erg, a dune system is usually found along ocean coasts, in desert regions, near lakes or inland, usually covered with little or no vegetation.
Dune systems occur in different shapes and sizes, formed by interaction with the flow of air or water. Dunes are characterized by blowing sand that abrades vegetation. Dunes can be natural, but also man made (artificial). In this case, they are semi-natural, since their shape and position will change with the winds.
- natural=dune - a sand dune: A hill of sand formed by wind. This tag has been used by more users and in more places than landform=dune_system
- natural=sand - an area covered by loose sand with no or very little vegetation (and which is not a beach)
- natural=beach - a landform along a body of water which consists of sand, shingle or other loose material, formed by waves