Dating holocene sediments
He had also argued that most of the Pleistocene sites at a time of lowered sea level.
He had also argued that most of the Pleistocene sites would have been coastal, since during the height of the last glacial period extensive ice sheets covered the central highlands, and much of the present island of Tasmania was treeless and inhospitable.
After this midden was deposited, the cave was not occupied for several thousand years, until Hunter Island was recolonised 2500 years ago by Tasmanian seafarers.
A drop in sea level of only about 55 metres exposed the floor of what is now Bass Strait, producing a land bridge of 15 million hectares (figure 9.1).
The present islands of Bass Strait would then have been hills overlooking a broad plain.