Discovery in 2018 of stone tools and fossils of butchered animal remains in Rizal, Kalinga has pushed back evidence of early hominins in the country to as early as 709,000 years. Some archeological evidence was found that humans lived in the archipelago 67,000 years ago, with the "Callao Man" of Cagayan and the Angono Petroglyphs in Rizal suggesting the presence of human settlement before the arrival of the Negritos and Austronesian speaking people. Continued excavations in Callao Cave however led to 12 bones from three hominin individuals being identified as a new species named "Homo luzonensis". For modern humans, the Tabon remains are the still oldest known at about 47,000 years.