Antipodes !
What's that?
Well, "Antipodes are points diametrically opposite each other on the Earth’s surface."
When you were a kid, you were often told that if you dug a deep deep hole in your backyard you would end up in China.
That location, if true, would be an Antipode.
Though, as you might imagine, not every deep hole would end up in China. Most of them would probably end up in either the Atlantic or Pacific Oceans.
But where might you end up?
There is an interactive map out there on the internet that will show you where.
Want to see it before you start digging? : )
And if you want to know more about Antipodes, HERE'S A LINK
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