Ayn al-Habis (Arabic: عين الحبيس),[1] also known by its medieval names Cave de Sueth (Old French, French: Cave de Suète),[2] Cava de Suet (Medieval Latin), or Habis Jaldak (Classical Arabic), is a 12th century cave castle built into the southern cliffs of the Yarmouk River gorge in modern-day Jordan.[3] It was located at the edge of the Terre de Suète[4] region (al-Sawad, "the black" in Arabic).[5]