The Glastonbury Festival is famed for being the muddiest and wettest of the festival circuit and, if these photos are any proof, 2011 is set to be much of the same.

The weather has disrupted festivals in the past, but event organizers have confirmed that a new drainage system is in operation, and the five-day music festival is ready for anything.

Rain was the forecast for day one of the festival at the Worthy Farm, outside of Bristol in southwest Britain. 177,000 people were expected to attend the festival this year with most arriving Wednesday, June 22.

Light showers are expected to hit the festival on Thursday as well as a heavier burst of rain on Friday evening. It is expected that U2's headline set on Friday will be hit by the rain.

Aside from U2's as the headline act on the Pyramid Stage on Friday, Coldplay will headline on Saturday and Beyoncé will round off the five-day music event on Sunday.

Here's a look at photos of the festival goers as they drag their belongings through muddy fields on the first day of the festival in Somerset: