a mound or ridge of sand a sloping surface with a crest parallel ridges of sand a windward side with a steep slope and an leeward side with a gentler slope sand of different colors vegetation in the area
dune which is a mound or ridge of sand dune which is a sloping surface with a crest dune which has parallel ridges of sand dune which is a windward side with a steep slope and an leeward side with a gentler slope dune which has sand of different colors dune which has vegetation in the area