noun, plural Aht·nas, (especially collectively) Aht·na for 1.
Origin of Ahtna
Examples from the Web for atna
Of the Atna dialects, it seems most to approach the Piskwaus.
(north-east of Greenland) to the mouth of the Copper river or Atna (west of Alaska).The Races of Man|Joseph Deniker
The Atna Indians were dressed in skins with the hair outside, and were armed with bows and arrows.Pioneers in Canada|Sir Harry Johnston
In regard to the Atna I have a statement of my own to correct, or at any rate to modify.
Their language is said to be a mixture of the Kenay, Unalashkan, and Atna.