 Couple of guys (by the sound of it) look to be out in a dry river bed or on the beach or something. The sound in this clip is not safe for work. They have a fuse on some explosive material set off in the distance and they are waiting for it to go off. When it blows up it make a pretty good mushroom cloud and big boom. The funniest thing about the video is the guy with the camera though. He's yelling and carrying on after it blows up and then they run towards it and see little fires burning all over the place in the sand.
Watch these guys blow up a bunch of sand and hear them yell in this video. Source: Big-boys.com | 
