E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Columns or Herculs.
Two large pyramidal columns set up by the Phnicians as lighthouses and landmarks, dedicated, one to Herculs (the sun), and the other to Astart (the moon).
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By the Greeks and Romans the two pyramidal mountains at the Straits of Gibraltar (Calp and Ab&ybreve;la), the former in Europe and the latter in Africa, were termed the Pillars of Herculs.