Visitors to the annual horseracing event, the Birdsville Races, walk under heavy rain clouds in the outback town of Birdsville on September 1, 2016. The downpour has threatened to postpone the races which sees the small town population of 115 people swell to 7,000 during the two-day event but bad weather has already hampered the turnout this year with the first heavy rain for decades. / AFP PHOTO / PETER PARKSPETER PARKS/AFP/Getty Images