What is "uzundara"

Uzundara or Ouzoundara — is a lyrical Azerbaijani

Языкознание: большой энциклопедический словарь. редактор Г. В. Келдыш. Большая Российская энциклопедия, 1998. Page 563

Узундара — азерб. нар. сольный женский танец.

and Armenian dance performed by women. The song originates in a valley between Agdam and Prishib village in Karabakh area by the name of "Uzun dara", which means Long valley in Azeri. The dance is especially popular among the Armenians of Karabakh. The authors of the book "Azerbaijani folk dances" suggested that the dance has spread among the Armenians of Karabakh as a result of their residence in close neighborhood with Azeris.