What is "caucas"

Caucas or Kavkasos was the purported ancestor of Caucasians. His story is narrated in the compilation of the medieval Georgian chronicles, Kartlis Tskhovreba, taken down from oral tradition by Leonti Mroveli in the 11th century. The legend has it that he was a son of Targamos and, thus, brother of Haos, Movakos, Lekos, Heros, Kartlos (known to be ancestor of Georgian people), and Egros took their origin.

Caucas' son Dzurdzuk is said to be the ancestor of modern Chechens and Ingushetians.