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One double-page spread in the book presented an idea that intrigued my son. It asked, "did you know that the story of the cyclops was probably started by an elephant skull?"
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So, how would an ancient Greek stumble across an elephant skull? Perhaps it wasn't an elephant at all, but a mammoth. Believe it or not, there were mammoths in the region, even on the islands. It may be possible that many Greek myths originated from an attempt to explain these fossils.
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If a mammoth, or at least its skull, could become a cyclops, what other monsters from myths and legends had actually begun as real creatures?
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This was a big question, and one I mused on for over a decade before the ideas fell into place and became the basis for Last Song of the Swan.