in the world for white water rafting, in the united states state of west virginia from there, gabriel elazondoorts. >> with paddles in hand, they are geared up to face one of the world's wildest rivers. it's the goli and it's particularly ferocious because for six weeks every fall, the flood gates of a nearby dam are opened wide, sending a huge amount of water gushing down the refer. >> it makes the rapids allotted mat for white water rafting. >> all the way from the u.k. >> it's a challenge for us. >> the reason we are doing it. >> a few minutes in, and the force of the goli rapids are evident. the guide shouts out commands because every paddle stroke is critical they make it out bur there is more to come. >> rapids are ranked based upon their difficulty. 1 being the easiest. clarify being the most difficult. here on the goli, there are 14 class four rapids and six class vs including this one called pillow rock. they say the guides are the key to safety. every company on this river, these guys are highly trained. they know this river backwards and forwards. they are very adept at reading wate