In recent decades a growing skepticism over the workings of nature conservation activities paralleled the world-wide expansion of protected areas. Taking the example of the 'Tara Hategului Dinosaurs Geopark' in Romania, the presentation discusses the emergence and circulation of palaeontological knowledge about the 70-million old Hateg Island by looking at the relationships between people, things, classification systems, heritage protection laws and “best practices” of conservation management. What can otherwise be understood as a timely transformative process that substitutes a particular understanding of subsoil and landscape for one geared towards conservation is mapped here as a convoluted trajectory of a boundary object. Together with inscription activities that turn and stabilize the stony matter into visible epistemic objects, the efforts of conservation practitioners to protect geodiversity in this area translates the materialized deep time of the 'Island' in order to co-interest other entities, like international bodies, universities, local administrations, various profit and non-profit organization. In this sense, rescaling the 'Hateg Island' brings to foreground both what these translations make visible and their simultaneous erasure of work that is deemed non-scientific. Instead of posing the conventional questions of ineffective management, more attention should be given to the naturalization of categories in an information infrastructure such as the International Union for the Conservation of Nature (IUCN). It is crucial to see that in their multiplicity, subsoils and landscapes are not only natural objects difficult to classify in clear-cut categories, but the geoconservation work also produces them as economic and political commodities.