In the Hidden Waters of Steung Treng In the remote wetlands of the Steung Treng province, in northeastern Cambodia, the Tonle Srepok River, a tributary of the mighty Mekong that originates in the central mountains of Vietnam, meanders through riparian forests and rural villages. There, in its calmer and shadier tributaries, where the water is dyed black by the decomposition of leaves and branches and the environment acquires an almost