Picture yourself standing at the edge of a huge green forest a long, long time ago, maybe hundreds of years in the past.

The trees are tall and thick, and birds are chirping high above your head.

Suddenly you hear a deep rumbling sound, almost like thunder rolling over the hills, even though the sky is bright bright blue and there isn't a single cloud.

Curious you walk through the tall grass, feeling it brush against your legs. As you get closer,

the sound gets louder and louder, making your heartbeat faster. Then all at once you step out from

the trees and see something amazing, a giant wall of water crashing down from a cliff, making a roaring noise so powerful that you can feel it shaking the ground and rumbling in your chest. The air around you is cool and filled with mist, tiny drops of water that make your hair and clothes damp.

When the sunlight shines through the mist, you can see beautiful, sparkling rainbows stretching

across the sky. You realize you are looking at Niagara Falls, one of the most famous and

breathtaking waterfalls in the entire world. I remember seeing Niagara Falls

for the first time myself when we visited New York as a family. I was in high school at the time

and was simply blown away at how huge the falls were. We drove across the border from New York

to Canada and then walked along the falls.

They were simply amazing, so I'm excited to share more about what I've learned with you.

Long before cars or big cities, Niagara Falls was already here, thundering away.

It was formed over 12,000 years ago at the end of the last ice age.

Back then, giant sheets of ice, called glaciers,

covered much of North America.

As the glaciers began to melt,

they sent huge rivers of water rushing south.

That water carved out the Great Lakes,

including Lake Erie and Lake Ontario.

The Niagara River connects these two lakes, and where the land drops suddenly, the river

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