The destruction of the forest is recorded with forensic precision.

Environmental activist Ma Chetra photographs the stump of each felled tree. In each shot, there’s a global positioning device to display each tree’s coordinates and a tape measure showing the width of each trunk – up to 1.5 meters (5 feet) in some cases.

The evidence appears indisputable that about 200 towering sentinels of the Preah Roka Wildlife Sanctuary in northern Cambodia’s Preah Vihear province have been cut down. Ma Chetra’s video shows felled tree trunks waiting to be dragged away, already-sawn timbers and charred remains where loggers appear to have set controlled fires to remove undergrowth.