Broad valley in northern Luzon, Philippines, containing several open sites from which, according to some claims, comes an association of a pebble and flake industry with a Middle Pleistocene fauna which includes Elephas, Stegodon, rhinoceros and bovids. Recent geomorphological studies have established the authenticity of the fauna, but there is still debate as to the precise stratigraphic occurrence of the tools, which may be later.
The Macmillan dictionary of archaeology, Ruth D. Whitehouse, 1983Copied