Park rangers gather at a boat at river bank in Kopacki Rit nature park in Osijek

 
Park rangers gather at a boat at river bank in Kopacki Rit nature park in Osijek
Park rangers gather at a boat at river bank in Kopacki Rit nature park in Osijek April 18, 2012. Environmentalists say that a planned waterway regulation project on the Danube in eastern Croatia, currently pending government approval, could threaten Kopacki Rit nature park, one of the best preserved wetlands of Europe. Picture taken April 18, 2012. REUTERS/Antonio Bronic (CROATIA - Tags: ENVIRONMENT)