Ipolytarnóc Fossils is above all a paleontological site of major importance, originating in a volcanic eruption which, as in the case of Pompeii, buried under ash what are now petrified trees, animal fossils, other trace fossils, leaf imprints etc. This disaster occurred, according to the newest dating, some 17 million years ago. The site obtained state protection in 1944: it is a favourite geotourism centre now showing in situ sheltered excavation areas. The first documented scientific exploration started in 1836 there. Since 1986 guided tours provide geoheritage interpretation for the public on the main geological study trail. Ipolytarnóc Fossils is the main gateway to the world’s first transborder geopark, the Slovak-Hungarian Novohrad-Nógrád UNESCO Global Geopark. The Bükk National Park Directorate manages the site, safeguarding its famous natural assets. To raise public awareness and maintain controlled tourism the Directorate has established several study paths and a Visitor Centre at the buffer zone of the site.