Every inch of Worthy Farm in Somerset has become a mud bath as early arrivals gear up for the beginning of the main event.
Welly-clad music fans put on brave faces despite hundreds of tents flooding and treacherous conditions underfoot.
Headliners at this year's event are Coldplay, Beyonce and U2.
Quagmire: A festival-goer carefully walks through a puddle at the Glastonbury festival in Somerset today
Desperate measures: Site workers try to suck mud from the market areas close to the Pyramid Stage in an attempt to dry them before the main event begins tomorrow
In for a penny... Tom Wilder, 17, from Kent, gets into the festival spirit and performs a dramatic slide in the Glastonbury Festival mud