Altus or Altos ( ; ) was a fortress town in

Mygdonia Mygdonia (; ) was an ancient territory, part of ancient Thrace, later conquered by Macedonia (ancient kingdom), Macedon, which comprised the plains around Therma (Thessalonica) together with the valleys of Klisali and Besikia, including the ar ...

near

Therma Therma or Thermē (, ) is the unknown city incorporated into the new city of Thessaloniki by the Macedonia (ancient kingdom), Macedonians on its synoecism and foundation. Little is known of literary Therma, including its exact location. Thessal ...

(later

Thessalonica Thessaloniki (; ), also known as Thessalonica (), Saloniki, Salonika, or Salonica (), is the second-largest city in Greece (with slightly over one million inhabitants in its metropolitan area) and the capital city, capital of the geographic reg ...

). The town is mentioned by

Stephanus of Byzantium Stephanus or Stephen of Byzantium (; , ''Stéphanos Byzántios''; centuryAD) was a Byzantine grammarian and the author of an important geographical dictionary entitled ''Ethnica'' (). Only meagre fragments of the dictionary survive, but the epit ...

and Theagenes of Macedon. Its site is unlocated.

References

*John Cramer, A Geographic and Historical Description of Ancient Greece (Clarendon Press, 1828), p. 238. Populated places in ancient Macedonia Former populated places in Greece Geography of ancient Mygdonia Lost ancient cities and towns {{AncientMygdonia-geo-stub