Think you know extreme sports? You haven't seen anything yet!

From mountain bike swamp snorkeling (yes, you read that correctly) to volcano boarding, Matthew Santoro counts down the 10 craziest sports in the world! These insane athletes push themselves past their limits in the name of these epic sports.

So, do you think Matthew got it right? What sport did you find the most insane? Let us know in the comment section below!

VIDEO BY:

Matthew Santoro / Via youtube.com

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