Pete Smissen

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One more time, AussieEnglish.com.au forward slash APC100.

All right, so to finish up, guys, let's go through the Aussie fact of the day.

Today, I wanted to talk about Australia's largest stone.

When we say kill two birds with one stone, Australia's largest stone gives us a pretty epic science lesson.

Uluru didn't just appear overnight.

According to geology, Uluru began forming around 550 million years ago.

Back then, the area was covered in rivers and shallow seas.

Sand, gravel and rock were carried by water and slowly piled up into massive layers.

Over time, pressure turned those layers into sandstone.

Then came the clever part.

As the land shifted and folded, those rock layers were pushed almost upright, which is why Uluru looks so steep and smooth today.

Millions of years of erosion wore away the softer surrounding rock, but Uluru stayed standing.

So, one stone tells us a lot at once.

It reveals ancient river systems, it shows how continents move, and it explains why the outback landscape looks the way it does.

One rock, many scientific stories.

That makes Uluru a perfect Aussie example of killing two birds with one stone, right?

Teaching us about Earth's history while still standing there quietly doing its job.