Under the streets of Sydney lies a honeycomb of tunnels that spreads for literally tens of kilometres. Many of these underground ways carry the essential services vital to this major city, but there are also a surprising number that have been used, or are still being used for such purposes as mining and defence. There are also those which have remained well-kept secrets for many years.
This book is a comprehensive survey of all the underground ways dug beneath the city - from Sydney's first water supply tunnel, dug not long after the first European settlement, to the recently constructed Sydney Harbour Tunnel, built using the latest technology.
