A reveller takes a drink during a traditional carnival at an open-air museum in the east Bohemian village of Vesely Kopec

A reveller takes a drink during a traditional carnival at an open-air museum in the east Bohemian village of Vesely Kopec

A reveller takes a drink during a traditional carnival celebrating the departing winter and forthcoming spring at an open-air museum in the village of Vesely Kopec, near the east Bohemian city of Hlinsko, January 31, 2015. The festival was added to the UNESCO list of world heritage in 2010. REUTERS/David W Cerny (CZECH REPUBLIC – Tags: ENVIRONMENT SOCIETY)