. . . some time later . . .
The Times, October 25, 2017
The word ‘chthonic’ may be in common use in the Times offices, but even so the writer should know that it will be unfamiliar to 99.9 per cent of readers, and therefore must be explained. However that would be a problem here, because as so often when someone tries to look clever by using an obscure word, he or she gets it wrong and looks a perfect idiot. The technical meaning of ‘chthonic’ is ‘subterranean’ but it is associated with underworld spirits and deities. Not the association that would be wanted in a Holocaust memorial, I imagine.
PS In the intro, ‘create’ means ‘to make a new one’ so ‘new’ is redundant. It would be a lot cleverer to get a simple thing like that right.