Our hearts were thumping watching this.
The Grand Canyon is one of the biggest tourist attractions in America and thousands of Irish people have visited it down through the year.
We doubt any of them experienced it quite like Dubliner Frank Cronin who took the "free version" of the Grand Canyon SkyWalk.
Frank, who's based in Los Angeles, walked out on a ledge hundreds of metres from the ground without any safety railing.
It's an intense watch and we encourage you to never EVER try this if you're in Arizona.
https://www.youtube.com/watch?v=wY_ouI42_o4
Clip via YouTube/Frank Cronin
