The Angono-Binangonan Petroglyphs Site Museum protects a remarkable engraved rock shelter in Rizal province. Across a wall approximately 25 metres long and three metres high, 127 human and animal-like figures form the oldest known rock-art assemblage in the Philippines. A viewing platform allows the public to see the carvings while reducing direct pressure on the fragile surface.
National Artist Carlos “Botong” Francisco recognised the engravings during a Boy Scout camping trip and reported them to the National Museum. An interdisciplinary team led by anthropologist Jesus Peralta investigated the site in October and November 1965. The petroglyphs were declared a National Cultural Treasure in 1973 and later entered international rock-art inventories.