Technically this probably doesn't count as an archaeological site in that I don't think anyone has dug around it looking for clues to the past but as a link to the history of our land it stacks up as one of the biggest and best:

Uluru aka Ayers Rock

For some impressive photos of the rock drag the little yellow sightseeing icon from bottom right to the Sunset Viewing Area to the right and below the rock.

But an important archaeological site in Australia is
Lake Mungo in NSW

Mungo National Park

"Scientists have discovered artefacts of this ancient culture dating back over 50,000 years across the expanses of the last ice age. This makes Mungo one of the oldest places outside of Africa to have been occupied by modern humans since ancient times."

I have said before that making some visits to outback Australia has been the highlight of my travels and I was privileged to visit Lake Mungo on a bus tour arranged through our University. We had a man who had studied indigenous people, an historian and the bus driver was a geologist. We also visited Wilpena Pound which is an impressive rock formation.

In all of the three places it was not just the sightseeing aspect which impressed me. It was the spiritual power of those places and the connection going back over 50,000 years for the indigenous people of our land.