Abstract: The invention concerns a gravestone assembly comprising a base with a gravestone detachably secured thereon by a securing arrangement. Disposed in the base is a threaded spindle which, when a gravestone is not mounted on the base is pretensioned by a spring in a position such that it projects out of the base on the gravestone side and is secured by a stop. As a result, the threaded spindle can be displaced with its upper end, which projects out of the base, against the force of the spring into the base and the foundation tube. In order to screw in the threaded spindle projecting out of the base, the gravestone has a threaded bore in its underside. The threaded spindle also projects downwards out of the base and is designed there such that it can be actuated by a turning device.