Uncovering the secrets of Ypres
By Robert Hall
BBC News, Belgium
Ninety years after the battle of Passchendaele, officially known as the third battle of Ypres, a group of enthusiasts is attempting to dig up some of the key trenches of World War I.
Conditions at the front were horrendous for troops
Across a flat, muddy Flanders landscape, a solitary figure is plodding along the furrows.
Geophysicist Malcolm Weale is a battlefield detective who specialises in uncovering history that has lain hidden for generations.
In this case, the ground beneath his feet shields secrets of World War I.
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