KI is the third-largest island of Australia after Tasmania and Melville Island. It is 155 km long, 55 km wide and with a 540-km coastline, making it seven times larger than Singapore. Stone tools found by archaeologists suggest that aboriginal people had inhabited the island about 11,000 years ago until 200 BC. A British explorer called Matthew Flinders discovered the island in 1802 and named it Kangaroo Island.