Festival goers arrive at Pilton Farm in Glastonbury in 2007. They are forced to drag their tents and belongings through the mud after heavy rain before the festival starts.
A woman is dragged through the mud around the food stalls on an inflatable boat. Last year, 700 acts played on more than 80 stages. Capacity was up by 20,000 to 177,000.
Wellie sellers have done well for the past few Glastonbury Festivals. 2007's was extremely wet and muddy but so was 2005 when a storm on the Friday morning washed tents away.
There was so much mud in 2007 that many people ditched the shoes and boots they had come in and bought new ones. Wish you were a wellie seller at Glastonbury in 2007?
Glastonbury is about the music but it is also features other arty performances like dance, comedy, theatre, circus and cabaret. And then there is the impromptu mud wrestling.
Michael Eavis started the Glastonbury Festival in the 1970s. It became an annual event in 1981 but there were breaks in 1988, 1991, 1996, 2001 and 2006 to let the site recover.
The sun finally comes out at Glastonbury 2007 but the mud and mucky water were there to stay. The site is a working dairy farm so it is always quite dirty when it rains.
1997 and 1998 were also badly affected by rain and mud. But the festival has had dry years like in 1999 when REM, Al Green and Fun Loving Criminals headlined the festival.
Glastonbury organiser Michael Eavis gives some of the profits from the festival every year to charity. By 2003, more than a £1m had been raised for good causes through ticket sales.
Getting off the Glastonbury Festival site at Worthy Farm can be a bit of hard slog when there is mud in the car parks. In 2007, tractors pulled many coaches onto the main road.