Greenpeace activists attach a ‘tent' to a power pylon in the Scheldt, within sight of the Doel nuclear plant near Antwerp with a plan to stay for as long as possible. The organisation display a message pertaining to a recent discovery of 13,000 cracks in the Doel 3 reactor vessel, some of them measuring up to 18 cm. The message on the banner reads 'Hoe groot is uw scheur?" in Dutch, which means 'How large is your crack?' in English.