Named sand dune fields and individually named dunes, the wind-built accumulations of loose sand recognized as a distinct place, following the aeolian dune-field landform class of standard geomorphology. Includes major named dune systems and dune-covered deserts (Namib Sand Sea, Tottori Sand Dunes, Great Sand Dunes, Rig-e Jenn), and individually named single dunes (Dune of Pilat, Dune 45, Rabjerg Mile). Belongs here: any entity whose defining identity is a specific, named dune or dune field. Does not belong here: a generic dune-type or aeolian-process concept described in the abstract rather than as a named place (a dune, erg or barchan article stays unlabeled here pending a broader landform-concepts pass, not forced into this subcategory), or a barrier island built partly of dune sand but identified as an island in its own right (Islands and Archipelagos).