We've all heard the stories about those thrillseekers who's gone down Niagara Falls. Now, prepare to hear one about those thrillseekers who've gone up Niagara Falls.

Earlier this week, Canadian ice climbers Will Gadd and Sarah Hueniken went down in history as the first to climb the falls.

The pair went along a route on a waterfall called Horseshoe Falls (considered the strongest waterfall on the planet), with Gadd leading the way and Hueniken trekking about 40 minutes behind.

Gadd was in awe of the experience, saying, "The power of the falls is staggering. It vibrates your intestines and makes you feel very, very small. I've never experienced anything like it!"

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