The stuff left behind after Glastonbury doesn't come as a surprise and isn't just left to damage the environment despite what the gammon who posted that vid on X would like you to believe because he thinks they are all 'lefties'. Well before the event is due to take place, a team of people has already been assembled ready to move in as soon as it's over and a friend of mine, Rob, is always among them and I know of several others. Most are self-employed and are glad to take a few days out of their usual routine as they get decent money for it. For example, Rob is a fence erector by trade and has done a bit of work in my garden and in my sister's. There is always a lot of stuff that can be sold and the money goes to charities and everything else is recycled as far as is possible and they leave the area as near to spotless as they can. Obviously, the cost of the clean up is covered by the tickets.