Australia - Willandra Lakes Region

"The fossil remains of a series of lakes and sand formations that date from the Pleistocene can be found in this region, together with archaeological evidence of human occupation dating from 45–60,000 years ago. It is a unique landmark in the study of human evolution on the Australian continent. Several well-preserved fossils of giant marsupials have also been found here." 

Source: UNESCO World Heritage

Postcard 1
Mungo National Park is part of the Willandra Lakes World Heritage area. Thanks to Heather of Australia. Nice Aussie stamps used.

Postcard 2

Willandra Lake Region. Thanks to Alison of Australia.