Alaborg

thumb|300px|Nicholas Roerich. Longships Built in the Land of the Slavs (1903)

Álaborg or Áluborg is the name of a Varangian fort mentioned in the Norse sagas about Halfdan Eysteinsson and Hrolf Ganger. The first saga indicates that it was possible to sail from Aldeigjuborg (Ladoga) to Alaborg northward by sea, but a more rapid and practicable way was by land eastward. The text implies that Alaborg and Aldeigjuborg were two rivals, situated at a short distance from each other.