Calpé and Abyla, one at Gibraltar and one at Centa, torn asunder by
Hercules that the waters of the Atlantic and the Mediterranean Sea
might communicate with each other. Macrobius ascribes these pillars to
Sesostris (the Egyptian Hercules), and Lucan follows the same
tradition.
More on Hercules' Pillars from Infoplease:
See a map of "" in the Visual Thesaurus