A Voyage to Terra Australis: Undertaken for the Purpose of Completing the Discovery of that Vast Country, and Prosecuted in the Years 1801, 1802, and 1803, in His Majesty's Ship the Investigator was a sea voyage journal written by British mariner and explorer Matthew Flinders. It describes his circumnavigation of the Australian continent in the early years of the 19th century, and his imprisonment by the French on the island of Mauritius from 1804 to 1810. Source: Wikipedia (en)