A 500-year-old Portuguese gun has been found on an NT beach, and may suggest Europeans arrived earlier than thought. A DARWIN BOY may help re-write Australia's history after unearthing what he believes is a 500-year-old Portuguese swivel gun on a Northern Territory beach. Portugal occupied Timor from 1515 until 1975, although it is hotly debated whether Portuguese explorers made it to Australia, about 700km away. Christopher Doukas made the discovery at Dundee Beach, about two hours' drive from Darwin. He found the gun when tides dipped to exceptional lows in January 2010, and he could walk out a long way...