Alaborg

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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.

In 1989, Tatiana Jackson demonstrated that the only location conforming to this description is the so-called "Gorodishche" (literally, "abandoned fortress") on the Syas River. It was the only sizable settlement in the area east of Ladoga until the 13th or 14th century. Its Norse name may derive from the Valya River that flows in the vicinity.