Bike hurtles down dam in dangerous stunt in Slovenia
16 September 2015 Last updated at 08:13 BST
A video of a mountain biker taking part in a stunt in Slovenia has clocked up 4.4 million hits since it was posted earlier this month.
Primoz Ravnik hurtled down a 60 metre high dam in Zirovnica on 28 August.
Mr Ravnik learned to ride a bike when he was just two, and is now a cross-country and downhill biker.
Please do not try anything like this at home or near where you live.