A popular demonstration of rock, metal, punk and other genres of this type or derivatives. This act for those who do not know it is when a group of people begin to move in relation to the rhythm of the music going from small jumps with head movements to strong clashes among the people who are in the area of the event.
His name so particular comes from that before it happens all this is prepared the ground making a circle where there is no one so that later everything runs rampant towards the center pushing each other. And that's why in my country we know it as "olla" which translated into English means pot.
If like me at first this activity seems a little strange and even a thing of madmen let me tell you that you will not know the pleasure of participating in one until you do. Even though their nature seems to be a senseless release of violence, it is an activity that helps people to vent and liberate all that they have locked inside themselves.
As much as it seems dangerous it is usually controlled activities where the people who participate do not seek to seriously injure the adjacent ones and for this reason, rarely does anyone get hurt in any way and much less gravity. With bad luck the worst thing you can gain is a bruise on the leg or a rip in your flannel.
Since an image speaks more than a thousand words I leave a video which is nothing more than the grouping of thousands of them.
Leave me in the comments as they call it in your country and why.