Diving Beneath the Nullabor Plain’s


Nullabor is home to the world’s largest single piece of limestone extending over an area of 270,000 square kilometers. Australian Traveler’s former editor, Elisabeth Knowles, recalls her experience at Nullabor “You get to see in 3D that distinctive big chomp mark on maps of Australia. The coastal cliffs are even more wild and raggedy than you’d expect.”

The Trans Australian Railway runs in a straight line across 483 kilometers of it. The TAR is known as the longest straight section of railway in the world. It also breaks the world record for the longest straight road in the world with an impressive length of 146 kilometers long. The Eyre highway was named after John Eyre as he was the first person to ever cross it with his travel companion John Baxter. John was shot by two aborigines and Eyre had to  cross the highway by himself.


Sparse rainfall in Nullabor has created depressions in the ground, where the limestone has slowly dissolved creating sinkholes and underground caves. The caves have a mystery of their own too; are they relics of an earlier period or a natural occurrence over time?

Cathy Johnson, reporter for ABC News and a team of researchers unraveled the mystery beneath the Plain. Ms. Johnson and some researchers scuba dived into the deep water caves and Cathy described it as “The water is so clear, it’s almost as if it is suspended in space. Discovering the caves were massive chemical mixing ‘pots’.”

What they found was a surprise. The caves are massive chemical mixing pots, that have been in a constant state of change for hundreds and thousands of years. How have it affected the extinct Southern Right Whales which have been swimming beneath the shores of the Plain?

Even though the weather conditions are quite harsh, it is home to a vast majority of animals such as kangaroos, emus, and wombats. Camels have also been seen walking and creating their own habitat in the Nullabor Plains, this may be because of the warm desert like conditions.

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