[in Dutch with English abstract: ] A fertile population of Andreaea rupestris was discovered on a shaded boulder within the Veluwezoom National Park in the Dutch province of Gelderland. Like most other ‘iconic hunebed species’ Andreaea rupestris showed a strong decline over the years in The Netherlands. Only about six moribund populations remain on slabs of ‘hunebedden’ (a type of dolmen), in the province of Drenthe. To facilitate the spread of Andreaea rupestris, two potentially suitable boulders were placed downwind in the vicinity of the newly discovered vital population. Will Andreaea rupestris colonise the stones? [lichens on photographs and included on a list from a phytosociological relevé]