AP Exclusive: Unique tombs found in Philippines  Associated
Press SHARE  By JIM GOMEZ, Associated Press    The discovery of
the rectangular tombs, which were carved into limestone outcrops
jutting from the forest ground, is important because it is the
first indication that Filipinos at that time practiced a more
advanced burial ritual than previously thought and that they
used metal tools to carve the coffins.  Past archaeological
discoveries have shown Filipinos of that era used wooden coffins
in the country's mountainous north and earthen coffins and jars
elsewhere, according to Dizon, who has done extensive
archaeological work and studies in the Philippines and 27 other
countries over the past 35 years.  Aside from the tombs,
archaeologists have found thousands of shards of earthen jars,
metal objects and bone fragments of humans, monkeys, wild pigs
and other animals in the tombs. The limestone outcrops had round
holes where wooden posts of houses or sheds may have once stood,
Dizon told The Associated Pre