Karabiga is a town in the Biga District, Çanakkale Province, Turkey. Its population is 2,962. It is located at the mouth of the Biga River, on a …Karabiga is a town in the Biga District, Çanakkale Province, Turkey. Its population is 2,962. It is located at the mouth of the Biga River, on a small east-facing bay, known as Karabiga Bay. Its ancient name was Priapus or Priapos.