History channel on TV always features the Angono Petroglyphs, the oldest known work of art in the Philippines. The127 human and animal figures engraved on the rockwall was carbon-dated to 3000 BC. The inscriptions obviously show human figures, frogs and lizards. Other designs that may have depicted other interesting figures has been damaged by erosion making it difficult to distinguish.
The Angono Petroglyphs is within the boundaries of Angono, Binangonan and Antipolo of Rizal province. The site was discovered by the late National Artist of the Philippines awardee Carlos V. "Botong" Francisco in 1965 when they were boy scouts. Some of the rock carvings have been damaged due vandalism and neglect. Presidential Decree No. 260 declared in 1973 it as a national cultural treasure by the Philippine government. A team then started archaeological site conservation led by the National Museum of the Philippines. Site developments of the petroglyphs included a mini-museum, viewdeck and stone path were constructed. The effects of a quarrying operations a few kilometers from the site were conducted.
The Angono Petroglyphs preservation and development is a collective effort of the National Museum of the Philippines, the Dept. of Tourism, World Monuments Fund, American Express and a Philippine real estate company. It is amazing that a TV channel like History Channel Asia provides this kind of information on a regular basis compared the Philippines' local TV Stations.