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I love a mysterious underground and have exploited this in many of my books: the ice tunnels of Greenland, the volcanic tubes of Iceland, the mysterious passageways beneath an ancient African hillside or a Buddhist monastery in central China. And of course, London's famous tube system, setting for my book LONDON UNDERGROUND. It's a funny sort of fixation, especially given my mother's claustrophobia, which I saw her deal with on many occasions. We once lined up to take a tour into the Lascaux Caverns in France to see the ancient cave paintings. My mother didn't make it past the first quirky turn into the depths, and she sent me on by myself. Given her interest in history and archaeology, which she used as the basis for a series of mysteries she published and which inspired my own writing, it always surprised me she still loved to write about places she could never visit.
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