Britain's Prince William and his wife Catherine, the Duchess of Cambridge, look at an Aboriginal map of Australia detailing the location of indigenous language groups before European settlement, presented by a student during a visit to the National Indigenous Training Academy at Yulara in the Northern Territory of Australia April 22, 2014. Britain's Prince William and his wife Catherine are undertaking a 19-day official visit to New Zealand and Australia with their son George. [Photo/Agencies]