WW1 saw 1.5 billion shells fired across the trenches. 500 million unexploded bombs still lie buried. Each year farmers dig up tons of explosives in what has become known as ‘The Iron Harvest’. Shells are collected and detonated in empty fields along the Western Front. it will take another 500 hundred years for battlefields are made safe.To bring home the reality of trench war fare 100 years on, artist Oscar van Heek filmed the detonation of actual WW1 ammunition in former battle grounds of Ypres
