Reuters Pictures
A card is placed next to human skulls of Khmer Rouge victims at Choeung Ek, a "killing fields" site located on the outskirts of Phnom Penh August 20, 2009. The remains of nearly 9,000 people were exhumed in the 1980s from mass graves in this one-time orchard, also known as one of the 'The Killing Fields' during the Khmer Rouge.