Glastonbury Festival factfile: 10 things you might not know

1 - Glastonbury is the world's biggest open air arts and music festival

2 - it began the day after Jimi Hendrix died, in 1970.

3 - The attendance was a comparatively minuscule 1,500 with a £1 entrance fee and the offer of free milk from Worthy Farm.

4 - Mick Ringham was the very first Glastonbury DJ is now an estate agent.

5 - Glastonbury uses about 3000 megawatts of electricity over a single weekend which is similar to the city of Bath.

6 - The Festival site covers 900 acres in the mystical Vale of Avalon.

7 - The main stage, Pyramid, is on a ley line that connects Glastonbury to Stonehenge.

8 - According to legend, Pilton, where Worthy Farm is situated, was once visited by Jesus Christ and his great-uncle, Joseph of Arimathea, on their way to the tin and lead mines nearby.

9 - The 1998 festival saw the invention of a new sport, mud-surfing.

10 - In 2005, there was two months' rainfall in a few hours, with car parks left under water and canoes used as transport.