The Iwahig River flows east out of the still forested central mountains of Palawan.
It runs through the eastern coastal plain of the island where most of the population is concentrated and where farmers grow crops such as irrigated rice and coconut.
I was in Palawan with a camera sometime in 1980 or 1981 for a story or two to publish in the color magazine Habitat of the Philippine Forest Research Institute based in Los Baños. I don't know what happened to the photographs and slides we took - I 'retired' soon after that. But I remember Palawan was lush and smelled of virgin forest all around, even in Puerto Princesa City. Malaria was feared.