The mysteries of antiquity could change how we view the world today:
According to history textbooks, Aboriginal explorers arrived in Australia from Asia at least 60,000 years ago. The first European widely known to have set foot on the continent was Dutch navigator Willem Janszoon in 1606, more than 160 years before captain James Cook arrived at Australia's south-eastern coast to claim the territory for the British empire.
So how did the five coins from distant Kilwa wind up in the isolated Wessel Islands? Was a shipwreck involved? Could it be that the Portuguese, who had looted Kilwa in 1505, reached the Australian shores with coins from East Africa in their possession? Or was it that Kilwan sailors, renowned as expert navigators all across the sea route between China and Africa, were hired by traders from the Far East to navigate their dhows?