Camping field stewards use a paddling pool as people arrive at the Glastonbury Festival amid heightened security at Worthy Farm in Pilton on June 21, 2017 near Glastonbury, England. The largest greenfield festival in the world Glastonbury Festival is now a five-day festival of contemporary performing arts. The Somerset Festival, which Michael Eavis started in 1970 when several hundred hippies paid just £1, now attracts more than 175,000 people. (Photo by Matt Cardy/Getty Images)





Festival goers jump in the air as they pose for a photograph as people gather to watch the sun set ahead of the gates opening to the public amid heightened security this year at the Glastonbury Festival site at Worthy Farm in Pilton on June 20, 2017 near Glastonbury, England. (Photo by Matt Cardy/Getty Images)





Festival security check bags as the gates open at the Glastonbury Festival amid heightened security at Worthy Farm in Pilton on June 21, 2017 near Glastonbury, England. (Photo by Matt Cardy/Getty Images)





Revellers pour water over each other to cool down in high temperatures as they attend the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





Mounted police officers mix with revellers at a merchandise stall during the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





A woman relaxes in the shade as high temperatures visit the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





A reveller walks among the tipi tents at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





A reveller relaxes in a hammock at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





A woman waits to receive customers on her stall at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





People seek shade as temperatures reach record levels at the Glastonbury Festival at Worthy Farm in Pilton on June 21, 2017 near Glastonbury, England. (Photo by Matt Cardy/Getty Images)





A group of recently arrived festival goers look for shade as temperatures reach record levels at the Glastonbury Festival at Worthy Farm in Pilton on June 21, 2017 near Glastonbury, England. (Photo by Matt Cardy/Getty Images)





Festival-goers watch the sun set at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





Festival-goers watch the sun set at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





Festival-goers pose for a selfie at the Glastonbury Festival of Contemporary Performing Arts 2017 at Worthy Farm, near Pilton, Somerset, Britain, 21 June 2017. The outdoor festival runs from 21 to 25 June. (Photo by Nigel Roddis/EPA)





Festival- goes gather in the Stone Circle to watch the sun set at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Oli Scarff/AFP Photo)





Festival-goers cheer at the Glastonbury Festival of Contemporary Performing Arts 2017 at Worthy Farm, near Pilton, Somerset, Britain, 21 June 2017. (Photo by Nigel Roddis/EPA)





Revellers paint faces at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers arrive at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers gather at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers are sprayed with water as they cool down at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers arrive at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers arrive at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers are sprayed with water as they cool down at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 21, 2017. (Photo by Dylan Martinez/Reuters)





Revellers arrive at Worthy Farm in Somerset for the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, on June 20, 2017. (Photo by Dylan Martinez/Reuters)