The new family vault/crypt for the royal family is completed and was open for journalist (2-by-2) today. The entrance to the old crypt where the royals have been 'buried' was closed.
See this article by NOS: it includes both a video as well as a 3-dimensional map. A new feature of the crypt is a place for urns. Princess Christina was the first Dutch royal who was cremated but there are no plans to move her remains to the family vault. However, they wanted to be prepared for the future.
This is the first crypt in which it is possible to stand; the first is so low that you need to crawl to get in; the one in the back (where among others Juliana, Bernhard and Claus are buried) is a bit higher but it is still not possible to stand in there.
Finally, an outside entrance has been created for easier access. Until now, a gravestone had to be lifted that blocked the entrance to a smaal side entrance. In this way it will be much easier for family members to visit (as well as for the mayor of Delft for the yearly inspection once).
I wonder whether princess (then queen again) Beatrix will be buried in the new part one day with prince Claus being moved to this part as well. As it seems they consider the part in the back to be completely full; in that case they might reserve Claus' current spot for princess Irene if she would want to be buried with her parents/in the royal vault in Delft. Princess Margriet and Pieter van Vollenhoven will not be buried here as they've already created their own spot in Apeldoorn near Paleis Het Loo/their home.