Australia's vast Nullarbor Plain hides deep caves that can teach us about alien worlds
Sep 19, 2026
Stretching more than 200,000 square kilometers (77,000 square miles) 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.
https://phys.org/news/2026-09-australia-vast-nullarbor-plain-deep.html
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