Sothear Chheng has one of the toughest jobs anywhere.
Two generations ago, this was a remote corner of the Ho Chi Minh Trail in eastern Cambodia. Now, on this steamy February morning, Chheng leads his team into Srepok Wildlife Sanctuary for another long, exhausting and potentially dangerous day.
Clad in camouflage green, Chheng leads seven rangers who fall into formation behind him. They walk single file. Their stoic faces betray a mixture of determination and slight fear, their eyes constantly scanning for animal snares, footprints, bullet cartridges and motorbike tracks—telltale signs of poachers. Suddenly, the sound of a chainsaw in the distance shatters the silence.