The aim of the project is to utilise the Rožná uranium deposit formed approximately 270 ma. as a natural analogue for the study of the behaviour of uranium in the Earth’s crust. In this manner we would like to facilitate predictions of the behaviour of burnt-up nuclear fuel which consists, similarly to the uranium ore at the deposit, predominantly of UO₂, at the place of its disposal. The aim is to deepen our knowledge of the mechanisms of deposit formation and the surrounding geological environment which has operated as a natural geochemical barrier precluding the migration of uranium from the deposit into the adjacent areas.