Human habitation of the Australian continent is known to have begun at least 65,000 years ago, with the migration of people by land bridges and short sea-crossings from what is now Southeast Asia. The Madjedbebe rock shelter in Arnhem Land is recognised as the oldest site showing the presence of humans in Australia. The oldest human remains found are the Lake Mungo remains, which have been dated to around 41,000 years ago. These people were the ancestors of modern Indigenous Australians. Aboriginal Australian culture is one of the oldest continual cultures on Earth.