Virgil's Aeneid - Book 8

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…great frequency without causing damage to anything. This suggests that as often as Vulcan and his workers make anything, there will be at least a minor eruption. Vergil, even thousands of years before any system had been developed, seemed to be trying to classify different types of volcanoes by explaining what creature lived underneath them. It can be said, then, that Vergil was inventing his own mythology to explain how a natural event was occurring.