Altus or Altos (/ˈæltəs, ˈɔːltəs/ A(W)L-təs; Ancient Greek: Άλτός) was a fortress town in Mygdonia near Therma (later Thessalonica).
The town is mentioned by Stephanus of Byzantium[1] and Theagenes of Macedon.
Its site is unlocated.
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