Since some time an anonymous burial is possible on some cemeteries
With an earth burial you have different options. There are places assigned by the cemetery administration. After 20 years, further use or re-occupancy by family members is generally no longer possible. Normally no urn may be buried. At the polling station, the relatives search for the grave place itself. After the rest period, the right of use can be extended. So the grave site can also be re-occupied. In general, up to four urns may be buried.
For some time, an anonymous earth burial is possible in some cemeteries. Here, the grave site receives no tombstone and is not planted. The area is planted with lawn. Of course, even in this form of burial, the relatives can participate in the funeral.