What lurks beneath the surface? In the bowels of a Sydney pub, the publican poses with his hand in chains: a reminder of the time when the underground store was a convict cell. A family, thrown out of home during the Great Depression, set up house in a cave. Women sort mushrooms in a disused railway tunnel in 1950s; a jazz band rehearses beneath the Royal George Hotel. As people go about their busy lives, beneath their feet members of the Cave Clan clamber through shadowy stormwater tunnels. Written by historian Michael McKernan, Underground Australia is illustrated with photographs from the National Library of Australia. With images by some of the country's best-known photographers, including Jeff Carter, Wolfgang Sievers and Frank Hurley, this book will take you on a journey to an amazing underground world.