Expunging the traces of mass murder is more difficult than might be imagined.
More than a fortnight after Anders Breivik's massacre on the Norwegian holiday island of Utoya, police and firemen are still struggling to clear up the mess the Muslim- and Labour Party-hating gunman left in his wake.
Hundreds of spent metal cartridges ejected by the killer's frightening assortment of automatic weapons are proving one of the biggest headaches. Police have been forced to use metal detectors to comb the paths and beaches where Breivik gunned down his 69 victims.
Getting rid of absolutely all the cartridge cases has become an issue of paramount importance.
"They are not the sort of thing people will want to stumble across on future visits to Utoya," a police spokesman said.