Read it through once

We were approaching the famed Pillars of Hercules, and already the African one, “Ape's Hill,” a grand old mountain with summit streaked with granite ledges, was in sight. The other, the great Rock of Gibraltar, was yet to come. The ancients considered the Pillars of Hercules the head of navigation and the end of the world. The information the ancients didn't have was very voluminous. Even the prophets wrote book after book and epistle after epistle, yet never once hinted at the existence of a great continent on our side of the water; yet they must have known it was there, I should think.