Taon 2006, an Anda red hermatite print petroglyphs of Bohol naibali sa tentatibong lista kan Filipinas para sa UNESCO World Heritage Site sa irarom kan ngaran na Petroglyphs and Petrographs of the Philippines, na kabali man an Singnapan charcoal-drawn petrographs kan sur na Palawan, Angono Petroglyphs kan probinsya nin Rizal, Alab petroglyphs kan Mountain province, asin charcoal-drawn Penablanca petrographs kan Cagayan.