Under Manhattan

Polar explorer, author and philosopher Erling Kagge was the first person ever to walk alone to the South Pole and to surmount the 'three poles': North, South and the summit of the Mount Everest. Now he explores New York like never before—underground.
Along with Steve Duncan, he descends into the network of sewers, subways and water tunnels that the city has to offer—all the way from The Bronx via Manhattan to the Atlantic Ocean. The account of their journey opens a world that has never been explored before.