Digging for their lives: Russia's volunteer body hunters

Of the estimated 70 million people killed in World War Two, 26 million died on the Eastern front - and up to four million of them are still officially considered missing in action. But volunteers are now searching the former battlefields for the soldiers' remains, determined to give them a proper burial - and a name.

Olga Ivshina walks slowly and carefully through the pine trees, the beeps of her metal detector punctuating the quiet of the forest. "They are not buried very deep," she says.

"Sometimes we find them just beneath the moss and a few layers of fallen leaves. They are still lying where they fell. The soldiers are waiting for us - waiting for the chance to finally go home."

Nearby, Marina Koutchinskaya is on her knees searching in the mud. For the past 12 years she has spent most of her holidays like this, far away from home, her maternity clothes business, and her young son.

"Every spring, summer and autumn I get this strange sort of yearning inside me to go and look for the soldiers," she says. "My heart pulls me to do this work."

They are part of a group called Exploration who have travelled for 24 hours in a cramped army truck to get to this forest near St Petersburg. Conditions are basic - they camp in the woods - and some days they have to wade waist-deep through mud to find the bodies of the fallen. The work can be dangerous, too. Soldiers are regularly discovered with their grenades still in their backpacks and artillery shells can be seen sticking out of the trees. Diggers from other groups elsewhere in Russia have lost their lives.

Marina holds up an object she has found, it looks like a bar of soap, but it is actually TNT. "Near a naked flame it's still dangerous, even though it has been lying in the ground for 70 years," she says.