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  2. top of the aat hierarchies
  3. Objects Facet
  4. Built Environment (hierarchy name)
  5. Settlements and Landscapes (hierarchy name)
  6. landscapes (environments)
  7. natural landscapes
  8. landforms (terrestrial)
  9. fluvial landforms
  10. wadis
Scope note
In regions of southwestern Asia and northern Africa, a valley or ravine which becomes a watercourse during rainy season.
Accepted term: 13-May-2024