The squat belfry of the Romanesque Catholic church still holds aloft its cross, and fragments of glass brick cling to the corners of the nave windows; one side window holds the barest outline of a rusty crucifix. It’s easy to imagine a small crowd of French colonials in formal dress assembled here for Sunday Mass. The subdividing walls inside were built by the Khmer Rouge. A bit up the hill, a sheer drop overlooks the rainforest.