WATCH: This Insane Video Of Some Mentaller Mountain Biking Down Croagh Patrick

Holy God!

Ireland's most famous pilgrimage has just been given an extreme sport make over. 

Check out these absolute mad lads biking it down Croagh Patrick, at the speed of light so it would seem. 

One of the bikers even fell half way down!

What do you guys think - is this deadly or stupid?

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