Animals present the numbers from one to ten, as earthworms, toads, ants, and others march and burrow, scurry and scooch deep down underground.

August 2010: the San Jose mine in Chile collapses trapping 33 men half a mile underground for 69 days. Faced with the possibility of starvation and even death,

Pull the tabs, lift the flaps and delve into the world of deep down underground: of tunnels, caves, mines and sewers, of dinosaurs and diamonds, bats and bones,

A visual and anecdotal exploration of the curious worlds hidden beneath our feet, including ancient cities, salt mine cathedrals, underground amusement parks, a

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