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Australia’s vast Nullarbor Plain hides deep caves that can teach us about alien worlds

By Milo Barham, Associate Professor, Earth and Planetary Sciences, Curtin University
Matej Lipar, Research Associate, Geosciences, ZRC SAZU; Curtin University

Stretching over 200,000 square kilometres across southern Australia, the vast, flat plains of the Nullarbor mark one of the world’s largest regions of limestone. It formed when an ancient shallow sea retreated some 14 million years ago.

Ultimately, this led to the familiar dry landscape of today, which has acted as a significant barrier…

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