{
  "case_id": "gobustan-musical-stone",
  "title": "Gaval Dash: the stone that sounds like a tambourine",
  "author": "Eklipsis",
  "language": "en",
  "edition": 1,
  "reviewed_on": "2026-09-30",
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  "included_source_documents": [],
  "linked_sources": [
    {
      "id": "S1",
      "title": "Azerbaijan Travel — Discover Gobustan’s ancient rock art",
      "url": "https://azerbaijan.travel/discover-gobustans-ancient-rock-art",
      "note": "Describes gaval dash and reserve history; no measured acoustics dataset."
    },
    {
      "id": "S2",
      "title": "UNESCO — Gobustan Rock Art Cultural Landscape",
      "url": "https://whc.unesco.org/en/list/1076",
      "note": "Archaeological context only; does not date a particular stone performance."
    }
  ]
}