Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Second Valley is a coastal town on the Fleurieu Peninsula in South Australia. The name is derived from being the next valley north of Rapid Bay, the initial camp on South Australian mainland of Colonel William Light. The Fleurieu Peninsula is a peninsula located south of Adelaide in South Australia, Australia. It was named after the French explorer and hydrographer Charles Pierre Claret de Fleurieu by the French explorer Nicolas Baudin as he mapped the south coast of Australia in 1802.