Bunda Cliffs, Limestone sea cliffs in South Australia.
Bunda Cliffs are limestone escarpments along South Australia's southern coast, stretching for hundreds of kilometers above the Great Australian Bight. The rock walls rise steeply from the ocean and expose layers of marine sediments and fossils in their exposed faces.
These cliffs formed roughly 65 million years ago when Australia drifted away from Antarctica. The separation created geological conditions that allowed marine sediments to accumulate and solidify into the limestone we see today.
The name comes from an Aboriginal language and received official recognition in 2014. Visitors often pause here to take in how the cliffs meet the ocean and the vast emptiness beyond.
Several viewpoints along the Eyre Highway offer convenient access for observing the cliffs and the coastline. Visiting during the Southern Right Whale migration season provides opportunities to spot these marine mammals from the ridge above.
The limestone foundation forms part of the Nullarbor Plain, which is the largest continuous limestone platform on Earth. This makes the site geologically rare and shapes how water flows beneath the surface across an enormous area.
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