 But on higher ground, implements were discovered by Dr. H. Otley Beyer around the Novaliches area, place that were not inundated by the rise of oscillation of sea and/or not disturbed by the infiltration of human habitation.Along the eastern and northeastern edges of Manila, artifacts were discovered along with tektites.The same types of material were found on the area of the present-day New Manila by Dr. H. Otley Beyer.