Upper Tanana language
Upper Tanana (also known as Tabesna, Nabesna or Nee'aanèegn') is an endangered Athabaskan language spoken in eastern Interior Alaska, United States, mainly in the villages of Northway, Tetlin, and Tok, and adjacent areas of the Canadian territory of Yukon.Upper Tanana also has an extra vowel phoneme and has developed diphthongs through loss of final consonants.The language is no longer taught to children of this current generation, therefore, the extinction of Upper Tanana is in the near future.In the 1960s, Paul G. Milanowski and Alfred John worked together to establish a writing system to produce several booklets and school dictionaries to assist in bilingual programs.Upper Tanana is the eastern part of Alaska that also shares the same location as the speakers of the Tanacross Language.