Hello and welcome back to the Curious Kid podcast.

Five years ago, when the coronavirus pandemic was keeping us from doing many of the activities we really enjoy,

my family was looking for new pandemic safe activities to pass the time.

One of the things we did a bunch of times

in 2020 was walk through a beautiful walking trail, just a five-minute walk from our house.

The name of the trail is Blueberry Hill, and people walk and bike along the trail that is nearly two miles long.

When walking along the trail, you stumble into something that's

really neat and unique. When I first saw it, I really didn't even know what it was,

so I looked it up to learn more. That thing that we stumbled upon at Blueberry Hill Trail is

something you might have near you too, because there are about 9,500 of them in the United States,

and about 500,000 of them worldwide. Are you wondering what in the world I'm talking about?

Let's find out. Mailbag!

Mailbag!

Hi, I'm Jace, and I'm five and a half years old. I love listening to your show in the car. I would love to get curious about quarries. What are they for? Where are they? I want to learn as much as I can about them. Thanks. Thank you, Jase, for that awesome message with a fantastic topic request.

In the seven years of the podcast and the thousands of topic requests we've received,

you are the first and the only listener to suggest quarries, and that's awesome.

It turns out that quarries are super interesting, and we can't wait to learn a ton about quarries and that's awesome. It turns out that quarries are super interesting and we can't wait to learn

a ton about quarries for you this week. And let's get the learning started with the question of the week.

Even though my dad learned what quarries were five years ago, they've been around for a very long time.

The ancient Egyptians even used quarries to

collect granite and limestone to create structures that were built about 4,600 years ago.

The question of the week is, what famous structures were built by the ancient Egyptians

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