Tunnels is a truly captivating book full of surprises and the unexpected around every corner. Although this book is chocked-full of adventure and discovery, you soon learn that the discovery isn't always what you wanted. Some of the tragedy and "realistic" fiction really completes the captivating story. You travel into the bowels of the Earth along side Will, trailing him like the mystery which shrouds Will's passage (of course the Styx are also getting in the way of Will as he descends into a fanciful city in the center of the earth). This story is then tied up with 
