A bird's-eye view shows a camp site during the 21st Woodstock Festival in Kostrzyn-upon-Odra, Poland July 31, 2015. An estimated 200,000 people attended the ongoing festival, a brainchild of Polish ... more 
A bird's-eye view shows a camp site during the 21st Woodstock Festival in Kostrzyn-upon-Odra, Poland July 31, 2015. An estimated 200,000 people attended the ongoing festival, a brainchild of Polish journalist and social campaigner Jerzy Owsiak, on Friday. Owsiak initiated the event to say thank you to those who donated money to his GOCC charity organisation that delivers medical care for children. REUTERS/Kacper Pempel less 
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Reuters | Photo By KACPER PEMPEL / REUTERS
Fri, Jul 31, 2015 6:52 PM EDT