The oldest known artwork in the Philippines is a depiction of a human-like figure on a cave wall in Peñablanca town, Cagayan province. It was discovered in 1965 and has been carbon-dated to be 3,500 years old. This makes it Southeast Asia's first directly dated rock art. It is also believed to be the oldest known artwork in the Philippines, surpassing the Angono Petroglyphs which were previously thought to be the oldest. The Peñablanca rock art is a pictogram with charcoal drawings and over 350 images have been documented. A team of researchers from Griffith University has confirmed the dating of this rock art for the first time. The Angono Petroglyphs, located in a different province, are considered the oldest form of art in the Philippines and were dated to the late Neolithic period.